MAZATLAN BIVALVES 31 
45, CUMINGIA: , sp. tnd. 
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 marks 
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, 
ait, “15. 
Hab.—California, Mus. Cuming.—In Chame, extremely rare : 
Mazatlan; L’pool & 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. Californica, Conr. Long. (18, lat. °23, alt. °11. 
Hab.—Mazatlan: in Spondylus Lamarcki, nestling im bur- 
rows: extremely rare; L’pool Col. 
Genus SANGUINOLARIA, Lam. 
46. SANGUINOLARIA PURPUREA, Desh. 
Proc. Zool. Soc. 1854, p. 346, no. 137. 
Compare Sanguinolaria tellinoides, A. Adams in Proc. Zool. 
Soc, 1849, p. 170: pl. 6, f. 6. 
?=Tellina (non Strigilla) miniata, Gould’s Plates, ms. 
This shell is extremely likeS.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. Zong. 1°07, lat. 1°73, alt. 47. 
Hab.—Mazatlan: extremely rare ; Z’pool Col. 
Tablet 108 contains 1 specimen. 
