1865.1 .MR. H . ADAMS ON N E W MOLLUsKS. 753

and phalanges, there is a large piece (two-thirds) of a sacrum, and two upper cervical vertebrz.

The remaining determinable fragments belonged either to a Dwk, more than one-fourth larger than the Common Mallard ( A n a s 60s- chas), or, which is more likely, to a small Goose, about the size of the Brent Goose (Bernic la brenfa) . There were a nearly perfect thigh-bone, the lower part of a tibia, the distal and middle part of a radius, the middle part of an ulna, the 1:irgest metacarpal, and the upper half of a coracoid, belonging to this srriall Anserine bird. Afr. Eruleben, who has so beautifully figured the best of these remains iu the plate which is now exhibited, snggests, from the size of the fragments and the generally injured conditiou of the condyles even in the nnbrolten bones, that the birds had been carried into the cave and eaten by foxes.

11. DESCRIPTIONS OY A N E W GENUS AND SOME NEW S P E C I S S O F MOLLUSKS. BY HENRY ADAMS, F.L.S.

MACRON W R l G H T I I , H. adarns. M. testa ovato-trigona, solidissirnu, subumbilicata, alba; spira brevi,

anfr. 4, convexiusculis, superne tubulalis, anfractu ulliino naagno, transversim sulcato, sulcis postice evanidis, antice tribus valde distinctis ; sutura canaliculata ; apcrtura ovnli, .% totius longitu- dinis tes ta ; columella arcuata, cull0 postice copioso, cunali brevi, recurvo ; l n h o postice injexo, antice sinuato-dentato.

Long. 75, Iat. 52 mill. Hab. Coast of Patagonia (Coll. mea). The specinien from which the itbove dpscri1)tion is taken was

obtained, I am informed by Mr. Wright, from tlie coast of I'ata- goniii. It is very nincll Gcacli-worrl, b u t when i i i a fresh state was, I Iiave no cloul)t, covercd with a tliick dark epidcriiiis like the other sperics of tlie genus. 171. wriglrtii differs iioni M . ke[/'ettii, which it most resembles, in being larger a d more solid, and iri its short spire and trigonill form.

The genus Macron has hitherto been coiisirlered a subgenus of l'seudoliva ; Lilt liiiviiig recently seen the operculuin of ill. kellettii, whicli is unguieiilatr, wliile that of P . Levis (the type of Pseudoliva) is purpiiroid, Macron m u s t be separated, nud take raiik as a genus.

EGLISIA MACANDRES, TI. Adams. E. testa subsolida, pallido-fulua ; anfr. 13, rotundatis, cingulis

obtusis spiralibus (quorum trrs mujores sunt) ornatis ; interstitiis lamellis aeutis, teiitcibus, subdistuntibus, loiigitudinalibus cancel- Infis ; a p r t u r a orbiciilari ; columella incrassata, antice e fusa et re$exn ; labro simplici, acuto, intus sulcato.

Long. 15, lat,. 8+ mill. Hab. Gibraltar (Coll. M'Andrew.). B single specimen of this intercsting addition to the genus Eglisia

YROC. ZOOL. sOC.-I 8G5, KO. S L I X .

754 MR. H. ADAMS O N NEW MOLLUSKS. [Dec. 12,

was dredged by Mr. M'Andrew off Gibraltar. It is in the finest possible condition, and the nucleolar whorls, which are sinistral and somewhat planorbular, show that the place of Q l i s i a is in the family Pyramidellick, and not in Turritellide, in which it has been hitherto included.

AMPHITHALAMUS OBESUS, H. Adams. A. testa obrsa, dense rufo-cornea, nitida, lavi, subdiaphana, mar-

ginibus sp ire ezcurvntis ; vertice nucleoso norniali, haud sculpto, upice mumilliito ; anfr. 5, subplunatis, rapide uugentibus ; basi tumirln, hnud sculpta ; apertura subovali ; labro acuto ; labio ( t . aduftie) a pariete spparnto, thakumum aliissimuna formante, ad marginem recto, adjunctionem labri nntice curvato.

Long. 18, lat. $ mill. IZa6. LOI d 1100d's Island (C'oll. mea).

AMPHITIIALAMUS PUPOIDEUS, 11. Aclams. A. testa niigusta, dense rufo-corneu, nitida, l ev i , subdiuphana, mar-

ginibus spire irregularihus ; vertice nwleoso valde mamillato, iumeiite, huud sculpto ; unfr. 4, subplanatis, vix uz~yentibus, ul- timo ynulum nngustiore ; basi prolongata, haud sculptu ; apertura ( t . udttltce) subcirculuri, peritremute rufo, continuo ; lnbro vix ungustato ; kubio a pariete paruin sqinrato, thulnmum lacunaturn

formante, ad junctionem lubri antice curunto. Long. I 4, lat. $ mill. H u b . Lord Iiood's Island (Coll. men). This species stands 011 the confines of the geniis, and passes

HETEROCARDIA DENNISONI, H. Adams. €1. testa ovata, subcompressa, tenui, requilaterali, hiante, albida,

tronsrersim incrqualiter striata ; latere antico rofundato, niargine suprriore paulo incu? vafo ; latere postico arcuu!im subtruncbto. inferne rolundato ; umbonibus parvis, subprominentibus.

Long. 37, alt. 27, Int. 1 5 mill. I ia6 . -1 (Coll. men). This species, which is the largest of the very rare genus IZetero-

cardia, is most like H . cuminrjii, Desh., b u t is much more oval in h r m , and Ims tlie umbones central. The specimen described formed pal t of the collection of the late Mr. Deiirlison, and is the only one I have seen.

towards Stenothyra, in shape, however, resembling Hyala.

Genus THYELLA, IT. Adams. Testa equiunliG, subtriangularis, postice sublruncata, vix jlexuosa,

ventricosu, rpidermide tenui pallido-fulva induta, sulierjicie val- vuiwn decussatn. In vnlva dextra dentes duo cardinules, quorum aqterior triangularis, bifidus, posterior minor, compressus ; i7t valvu sinistra dens cardinalis solitarius, triangularis, bijidus ; ligamenturn internum, in foveo subcentrali vix declivi posifum ; dentes luterules nulli. Impressiones musculares satis conspicui, posterior rotundnta, anterior elongata ; linea pallinlis sinuntn.

1865.1 M R . F. MOORE O N BENGALESE LEPIDOPTERA. 75 5

TRYELLA PULCHRA, H. Adams. T. testa subaquilaterali, antice longiore, candida, vulvarum super-

j c i e costis tenuibus radiantibus et liris excentricis decussata ; um- bonibus parvis, subrecurvis ; margine dorsali excavato ; sinu pal- liali profundo.

Long. 13, alt. 11, lat. 7 mill. Hub. Sirigapore (Coll. C’uming.). This genus appears to have most affinity with Semele, but differs

in the absence of lateral teeth, in its more ventricose form, and in the position of the internal ligament. The surface of the valves of the species described is decussately sculptured by radiating ribs and thin concentric lirE.

I avail myself of this opportunity to state that the genus Leu- conyz, some time since described by my brother and myself, must be cancelled, as we have recently had an opportnuity of proving that it is founded upon the internal spathulate apprndage of PhoZus costattl. The name Plectostorna also, which I gave lately to a very peculiar form of Rdix from Labuan, must be considered a synonym of Opisthostoma. Ulauford, which was established to receive a small shell from India, much more 1’upa-s~iaprd than the type of P k c - tostonza, but, I think, belonging to the same group, and which has hitherto been supposed to be furnished with ail operculum, and to be allicd to D+lornmatina.

12. ON THE LEPIDOPTEROUS INSECTS OF BENGAL. B Y FREDEILIC &fOOltE .

(Plates SLI., S L I I . , XLIII . )

Excepting a brief list of Lepidopterous Insects from the N.W. Himalaya, compiled by Kollar and puldished in Hiigel’s ICaschniir,’ arid another by myself, printed in the ‘ Proceediiigs’ of this Socicty for the present year, of a rollectioii of Diuriial tepidoptera recently made in nrarly the same districts by Capt. A. N. Lniig, 110 record has appeared of the many very interesting “ local ” Indian collections that have so frequently been formed. In the following pages a list is given of the species contained in a very extensive collection niade in the Proiince of Uengal by Mr. A. E. Russell, of the Bengal Civil S e n ice, who has kindly p1:iced theiii in my haiids for thls purpose, and of othcrs collected in the hame Province by Mr. W. S. Atkillsou and the late Capt. J. L i d Sherwill.

Sect. 1. RIIOPBLOCERA.

Tribe 1. PAPILIONES. Fam. PAPIIJONIDAL

ORNITHOPTERA RHADAMANTHUS, Boisd. S~e‘c. G6n. Ldp. i. p. 180.