199 



tam, griseam, aurantia, purpureo radiata ; intus purpurea, 

 dent. card. obtusis, cicatr. muse. distinctis, sinu pallii minimo' 

 Long. -37, lat. -53, alt. -27. 



Hab. lu Sinu Californiensi (Lieut. Shipley in Mus, Cuming') • 

 Sta. Barbara {Col. Jewett m Mus. Gould). ' 



Of the general appearance of C. bicarinata, but much less cib- 

 bous, less angulated, and highly coloured. It resembles, but ap- 

 pears distinct from, one of the CIaiborne fossils in Mr. Nuttall's 

 collection. Col. Jewett's specimens were all dead valves. 



4. Lyonsia nitida, Gould. 



Osteodesma nitidum, Gould, p. 17. pi. 15. f. 6=(probably) Lyon- 

 sia Cahformca, Conr. jun. J ^ i/ 

 Hab. Sta. Barbara (lAeut. Green). Mus. Gould. 



5. Semele flavescens, Gould. 

 Amphidesma flavescens, Gould, p. 19. 



Semele proxima, B. M. Maz. Cat.p. 28. no, 40. Mus. Cutn. pars, 

 non C. B. Adams nec Mus, Cum. pars. 



The Mazatlan species was identified from the supposed types in 

 the Cummgian collection. Ou fiuding Dr. Gould's shell identical 

 lt appeared extraordinary that he should have re-described one of 

 l'rol. Adams species. In another dravver of Mr. Cuming's oabinet 

 however, appeared another shell, also named Semele proxima C b' 

 Ad which is probably the real type. It is larger and more pointed 

 at the beaks than the present species. Severai of the described spe- 

 cies of Semele are extremely similar. So long, however, as they are 

 kept distmct, the Mazatlan shells mušt rank under the present name 

 and not under that of Prof. Adams, under which they have been 

 Ireely distnbuted. 



6. Sanguinolaria miniata, Gould, 



Tellina miniata, Gould, Proc, B. N. H. S. Nov. 1851 : Mex &c 

 p. 24, pi. 16, f. 1. , . ., 



Sanguinolaria purpurea, Desh, P, Z. S. 1854, p. 346. no 137 • 

 B. M, Maz, Cat. p. 31. no. 46, 



Hab. San Juan {Lieut, Green). 



Although I have not seen the type of Dr, Gould's shell, there can 

 hardly be a doubt that it is the šame as that of Desh., and therefore 

 has pnority over the name adopted in the B. M. Cat. While the 

 eariier sheets of that work were passing through the press, I had 

 only the advantage of Dr. Gould's platės, vvithout print or dates. A 

 more rapid intercommunication of materials between naturalists in 

 different countries is greatly to be desired. 



7. Tellina tersa, Gould, p. 25. pi. 16. f. 2. 

 Hab. Panama (Jewett). Mus. Gould. 



8. Tellina ptjra, Gould, p. 25. pi. 16. f. 3. 

 Hab. Panama (Jewett). Mus, Gould, 



