Zoological Societij. 305 



10. Crassatella sulcata. Lamarck, Anim. sans vert., vol. v» 

 p. 481 ; Reeve, Conch. Icon. Crassatella, pi. 2. f. 6. a. and b. 



Hab. ad oras Novse Hollandi?e. 



This is another very rare species ; I know of two or three odd 

 valves, but onl)"- one true pair, which is in Mr. Cuming's collection. 



11. Crassatella rostrata. Lamarck, Anim. sans vert., vol. v. 

 p. 481 ; Reeve, Conch. Icon. Crassatella, pi. 2. f. 10. 



Hab. ad insulam Ceylon. 



The figures which have been just published by M. Chenu in De- 

 lessert's ' Recueil de Coquilles ' as the Crassatella rostrata of Lamarck, 

 are certainly not that species, nor do they at all correspond with his 

 description of it, particularly in that part which says intlis margine 

 cremdato ; I have moreover every reason to believe that they are 

 drawn from specimens of the new species from the island of Marga- 

 ritta, which we have called Crassatella Antillarum. The Crassatella 

 rostrata is a well-known species from Ceylon, and the only large 

 one of the genus that is distinctly crenulated at the margin. 



12. Crassatella gibbosa. Sowerby, Proc. Zool. Soc, 1832, 

 p. 56; Reeve, Conch. Syst., pi. 44. fig. 2 ; and Conch. Icon. Cras- 

 satella, pi. 1. f. 1. a. and b. 



13. Crassatella corbuloides. Crass, testd suborbiculatd, valde 

 gibbosa, nmbones versus profunde siilcatd, epidcrmidc fiiscd in- 

 dutd ; latere antico rotundato, postico producto, subito rostrato. 

 Reeve, Conch. Icon. Crassatella, pi. 2. f. 9. 



Long. If; alt. 1 polL Mus. Stainforth. 



Hab. ? 



The title of corbuloides is selected for this new and very character- 

 istic species, on account of its short gibbous form ; the anterior side 

 is suddenly beaked, like some of the Corbulce, and cannot well be 

 confounded with the Crassatella gibbosa, to which it is nearly allied. 



14. Crassatella radiata. Sowerby, App. Tank. Cat. ; Reeve, 

 Conch. Syst., pi. 44. fig. 1 ; and Conch. Icon. Crassatella, pi. 3. f. 12. 



Hab. ad insulam Singapore. 



This species, originally described by Sowerby from a specimen 

 belonging to the late Earl of Tankerville, was found by Mr. Cuming 

 at the island of Singapore, in coarse sand at seven fathoms' water. 



15. Crassatella subradiata. Lamarck, Anim. sans vert., vol. v. 

 p. 482 ; Reeve, Conch. Icon. Crassatella, pi. 3. f. 15. a. and b. 



I have little doubt but that the shell now before me, from the col- 

 lection of the Rev. Mr. Stainforth, is the Crassatella subradiata of 

 Lamarck. Unfortunately there does not exist any drawing of it, nor 

 does it appear in Delessert's 'Recueil de Coquilles,' in which M. Chenu 

 professes to illustrate all the species described by Lamarck that have 

 not yet been figured. 



16. Crassatella contraria. Lamarck, Anim. sans vert., vol. v. 

 p. 481 ; Reeve, Conch. Icon. Crassatella, pi. 3, f. 1§. Mus. Stain- 

 forth, Saul. 



Venus contraria, Gmelin. 

 Ann. ^ Mag. N. Hist. Vol. xi. X 



