MAZATLAN BIVALVES 31 



45. CtJMiNGiA , sp. ind. 



Messrs. Cuming and Hanley who possess perfect specimens 

 of this shell, regard it as a new speeies. Let those describe it 

 however who understand the specific marks in this genus. The 

 few valves found were all toothless. The pit and tooth marls 

 are extremely small ; shell small, delicate, flat, triangular. It 

 closely resembles C. striata, A. Ad. Proc. Zool. Soc. 1850, p. 25, 

 and has affinities with Syndosmya tenuis. Long. '3, lat. '38, 

 alt. '15. 



Hctb. California, Mus. Cuming. In Chamse, extremely rare ; 

 Mazatlan ; Lpool fy Havre Coll. 

 Tablet 106 contains 2 valves. 



Tablet 107 contains 1 of three small specimens which I can- 

 not identify with existing species. The form is very regular, 

 like C. Cleryi, A. Ad. but the shell is convex, and marked as in 

 the typical species. The teeth bear most resemblance to 

 C. Calif ornica, Conr. Long. '18, lat. '23, alt. "11. 

 Hob. Mazatlan : in Spondylus Lamarckii, nestling in bur- 

 rows : extremely rare ; Lpool Col. 



GENUS SANGUINOLAEIA, Lam. 



46. SANGUINOLAEIA PUEPUEEA, Desk. 



Proc. Zool. Soc. 1854, p. 346, no. 137. 



Compare Sanguinolaria tellinoides, A. Adams in Proc. Zool. 

 Soc, 1849, p. 170 : pi. 6, f. 6. 



? = Tellina (non Strigilla) miniata, Gould's Plates, ms. 



This shell is extremely like S. tellinoides, but differs in texture, 

 "one being thin and delicate, the other coarse and strong in 

 comparison," Cuming. Gould's description may prove his shell 

 to be different. It seems almost as much a Tellina as T.rufescens. 

 It is the Pacific analogue of S. rosea. Only 2 specimens were 

 found in the L'pool Col. (Mus. Archer & B. M.) ; but as several 

 specimens were in the London shops, it is probable that more 

 were sent in the Havre Col. Long. 1*07, lat. 1'73, alt. '47. 

 Hob. Mazatlan : extremely rare ; L'pool Col. 



Tablet 108 contains 1 specimen. 



