72 



whose investigation of the Pteropoda promises to be of high interest 

 to natūrai scieuce. 



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

 impolitd, inius extusqite albidd, subohlique et concentrice undulata ; 

 margine ventrali convejco ; dorsali antice subrecto et vix declivi, 

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

 rosirato ; fleivrd costdque umbonali distinctis ; natibus acutis ; 

 dentibus lateralibus nullis. Long. 040 ; lat. O' 80 poli. 

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

 The obliąue 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, lenui, nitidissimd, compressd, 

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

 iusculo, subhorizontali ; latere antico longiore, ad extremilatem 

 rotundato aut obtuso ; postico cuneiformi ; flexurd costdque umbo- 

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

 0-50; lat. 1 poli. 

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

 Bears a close resemblance to the margarilacea 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, convezd, nitidius- 

 culd, rosed, antice et infernt substriatd; margine ventrali arcuato ; 

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

 tušo ; flexurd costdque umbonali distinctis ; latere antico paululūm 

 longiore, rotundato ; postico subacuminato, subrostrato ; dentibus 

 lateralibus nullis. Long. r20 ; lat. rfc5 poli. 



Hab. ? Mus. Cuming, Walton, Metcalfe. 



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

 viated specimen of the T. depressa of Lamarck, \vhich latter mušt 

 resume its prior appellation of incarnata, being decidedly the species 

 so designated by Linnseus. 



" Descriptions oi Marginelhc collected during the voyage of H. M. S. 

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



Marginella, Lamarck. 



Section I. Pheenospira. 



Marginella piperata. Mar. testd obovatd, maculis parvis nigris 

 et albidis, interdum longitudinaliier coalitis, confertim ornatd ; 

 spira retuso-conicd, oblusd ; an/ractu ultimo rotundate angulato ; 

 spird lined unicd comitatd ; labro incrassato, extus nigro maculato, 

 intUs IcEvi ; columelld quadriplicatd. Axis 9 lin. 



Hab. r 



Cab. Cuming. 



