50 Zoological Society. 



longiore, rotiindato ; extremitnte posticd subrostratd ; dentihus 

 lateralibus rndUs. 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, temiissimd, compressd, 

 impolitd, intus extusque albidd, siihohliqu'e et concentrke undulatd ; 

 margine ventrali convexo ; dorsali antice suhrecto et vix dedivi, 

 posticc incurvato, satisque dedivi ; latere postico brevi, atteimato, 

 rostrato ; flexurd costdque nmbonali distinctis ; natibus acutis ; 

 dentibus latercdibus niillis. 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 crudgera ; the fold is very distinct and 

 the ligament sunken. 



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

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

 inscido, subhorizontali ; latere atitico longiore, ad extremitatem 

 rotundato aut obtuso ; postico cuneiformi ; jlexurd costdq^ie 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 vtrinque subdedivi, antice convexo, post ice recto ant subre- 

 tuso ; jlexurd costdque umbonali distinctis ; latere antico paululiim 

 longiore, rotundato ; postico subacuminato, subrostrato ; dentibus 

 lateralibus iiullis. Long. 1"20 ; lat. I'So poll. 



Hab. ? IMus. Cuming, Walton, Metcalfe. 



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

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

 resume its prior appellation of incai-nata, being decidedly the species 

 so designated by Linneeus. 



" Descriptions o{ Marginellce collected during the voyage of H.M.S. 

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



Makginella, Lamarck. 



Section L Phcenospira. 



Marginella piperata. Mar. testd obovatd, mactilis parvis nigris 

 et albidis, interdum longitudinaliter coalitis, confertim ornatd ; 

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



