so Zoological Society. 



longiore, rotundato ; extremitate posticd suhrostratd ; dentibus 

 lateralibus nullis. Long. 0*75 ; lat. 1*25 poll. 

 Hab. St. Nicholas, Zebu ; sandy mud at low water. 

 I have named this species in honour of my friend M. Souleyet, 

 whose investigation of the Pteropoda promises to be of high interest 

 to natural science. 



Tellina undulata. Tel. testd oblongd, tenuissimd, compressd, 

 impolitd, intus extusque albidd, suboblique et concefitrice undulatd ; 

 margine ventrali convewo ; dorsali antice subrecto et vix declivi, 

 postice incurvato, satisque declivi; latere postico brevi, attenuato, 

 rostrato ; flexurd costdque umbonali distinctis ; natibus acutis -, 

 dentibus lateralibus nullis. Long. 0*40 ; lat. 0*80 poll. 

 Hab. St. Elena, West Columbia; sandy mud, six fathoms. 

 The oblique waves are chiefly conspicuous in front of the shell, 

 and become concentric posteriorly. This character is so distinct 

 that the species cannot possibly be confounded with any of this genus. 

 The general shape is that of crucigera ; the fold is very distinct and 

 the ligament sunken. 



Tellina micans. Tel. testd subovali, tenui, nitidissimd, compressd, 

 nived, lavigatd ; margine ventrali convexo ; dorsali antice convex- 

 iusculo, subhorizontali ; latere antico longiore, ad extremitatem 

 rotundato aut obtuso ; postico cuneiformi ; flexurd costdque umbo- 

 nali obsoletis ; natibus obtusis ; dentibus lateralibus nullis. Long. 

 0-50; lat. 1 poll. 

 Hab. Catbalonga, isle of Samar, and Bias, isle of Negros. 

 Bears a close resemblance to the margaritacea of Lamarck, but 

 that species is not devoid of lateral teeth. It is a glassy-looking 

 shell and highly polished ; the surface too is sometimes slightly opa- 

 lescent. 



Tellina cuspis. Tel. testd ovatd, solidiusculd, convexd, nitidius- 

 culd, rosed, antice et in/erne substriatd; margine ventrali arcuato ; 

 dorsali utrinque subdeclivi, antice convexo, postice recto aut subre- 

 tuso ; flexurd costdque umbonali distinctis ; latere antico paululilm 

 longiore, rotundato ; postico subacuminato, subrostrato ; dentibus 

 lateralibus nullis. Long. 1*20 ; lat. 1*85 poll. 



Hab. ? Mus. Cuming, Walton, Metcalfe. 



A beautiful shell, whose general appearance is that of an abbre- 

 viated specimen of the T. depressa of Lamarck, which latter must 

 resume its prior appellation of incarnata, being decidedly the species 

 so designated by Linnaeus. 



•* Descriptions of Marginellce collected during the voyage of H. M.S. 

 Sulphur, and from the collection of Mr. Cuming," by Mr. Hinds. 



Marginella, Lamarck. 

 Section L Phcenospira. 

 Marginella piPERATA. Mar. testd obovatd, maculis parvis nigris 

 et albidis, interdum longitudinaliter coalitis, confertim ornatd -, 

 spird retuso-conicd, obtusd; anfractu ultimo rotundafh angulato ; 



