306 Zoological Society, 



Venus divaricata, Chemnitz. 



Crassatella divaricata, D'Orbigny. 



Hah. ad insulam Lancerotte, Canariarum. 



I have only seen three specimens of this very interesting shell. 

 The above locality is quoted from D'Orbigny's ' Mollusques des lies 

 Canaries ;' it is the only species of Crassatella he found in that di- 

 strict. 



17. Crassatella ziczac Crass, testd subtrigond, depressd, lute- 

 old, epidermide tenui indutd ; radiis binis interruptis ab umbonibus 

 ad margines divergentibus, lineis roseis, flexuosis, ubique pictd ; 

 intus subrosaced ; latere antico breviculo, rotundato ; postico sub- 

 angulato ; lunula utrinque radiis roseis vivide virgatd. Reeve, 

 Conch. Icon. Crassatella, pi. 3. f. 13. 



Long. 11 ; alt. 1 poll. Mus. Cuming. 



Hob. ad insulam Corrigidor, Philippinarum. 



This species was found by Mr. Cuming at the island of Corrigidor, 

 in coarse sand at six fathoms water ; he possesses it in several stages 

 of growth, all of which are covered with fine rose-coloured zigzag 

 lines. 



18. Crassatella triquetra. Crass, testd trigona, solidd, rosa- 

 ced, epidermide tenui indutd, transversim striatd; maculis roseis 

 irregularibus vivide pictd ; intus rosaced, versus marginem albi- 

 cante • margine tenuiter crenulato ; lateribus subrectis, vix rotun- 

 datis ; lunula utrinque magna, radiis roseis vivide virgatd. Reeve, 

 Conch. Icon. Crassatella, pi. 3. f. 14. 



Long. £ ; alt. § poll. Mus. Stainforth, Cuming, &c. 



Hab. ? 



I am unfortunately ignorant of the locality of this pretty little 

 species ; it is of a warm rose-colour, radiately spotted with deep pink, 

 and is of a solid triangular form. 



19. Crassatella ornata. Crass, testd trigona, subdepressd, pal- 

 lidd, lineis spadiceis brevibus, longitudinalibus, varie pictd, trans- 

 versim striatd ; intus albdque brunnea, margine tenuiter crenulato, 

 latere antico rotundato, postico flexuoso, angulato. Reeve, Conch. 

 Icon. Crassatella, pi. 3. f. 17. 



Mesodesma ornata ? Gray. 



Long. 1 J ; alt. J- poll. Mus. Stainforth. 



Hab. ? 



A specimen of this shell, in the collection of Miss Saul, is the only 

 one we have seen at present. The above title has been decided upon 

 because there is an inaccurate figure of it in Griffith's ' Cuvier's 

 Animal Kingdom ' with the name of Mesodesma ornata ; it is not ac- 

 companied with any description, but we believe it to be intended for 

 this shell. 



March 8. — William Yarrell, Esq., Vice-President, in the Chair. 



Mr. Waterhouse called the attention of the Members to two new 

 species of Marsupial animals from South Australia, and forming part 

 of a collection presented to the Society by J. B. Harvey, Esq. ; one 



