256 JOURNAT. OF CONCHOLOGY, VOL. ID, NO. 8, OCTOBER, I902. 



identified for me by the present Mr. Sowerby as T. fuscazxe. clearly, 

 in my opinion, only forms of T. sangiiinea. From the Galapagos 

 Islands I possess reddish, delicate elongate shells, corresponding well 

 to the Sowerby figure, but without dorsal suture or streak, and also 

 dark globose specimens much like the Reeve figure ; but I take these 

 last to be inimature T. galapageiisis. (See note on no. 21 postea). 



13. — T. galapagensis Melv.^ 8 mm. Galapagos Islands. A jet 

 black shell, sent by me. Very rare. 



This species proves to be ribbed throughout when perfect, instead 

 of smooth on top, as described. 



14. — T. maugeri Gray. 20 mm. Galapagos Islands. Very 

 rare. Similar to T. pacifica and T. S7(ffiisa, but very large. I know 

 of but two examples here — one fine, one badly bleached. 



15. — T. pacifica Gray. 10 mm. Gulf of California to Galapagos 

 Islands. 



16. — T. pulla Gaskoin. 7 mm. Gulf of California to Galapagos 

 Islands. 



17. — T. radians Lam. 22 mm. Southern California to Gala- 

 pagos Islands. 



18.— T. rubescens Gray. 8 mm.? Galapagos Islands, Panama (?) 

 and Gulf of California (?) The type from Galapagos Islands was 

 described originally as " pale reddish-brown, thin, ribs slender and 

 continuous across the dorsal line," and " very like small spotless speci- 

 mens of T. pediadus, but darker coloured and having the outer lip 

 only one-half of the breadth in that species."-' Reeve remarks this to 

 be "rather a solid shell than otherwise" (no. 141), and Sowerby 

 describes it as rose-pink, allied to T. europcea, resembling T. candidula 

 in form, with ribs acute and few in number (no. 18 r and note to 

 no. 183). A specimen of Trivia, recently received by me from the 

 type locality of T. rtibesceiis, has the form of T. candidula and is much 

 like T. I'ulnnicolor, but does not answer to the description of T. 

 rubesce7is. (See note on no. 2 1 postea^ 



19. — T. sanguinea Gray. 14 mm. Gulf of California (not Cal.) 

 to Peru (?) 



The characteristic . reddish colouring on the back is often lacking. 

 Small, bleached, reddish-brown specimens have, I think, been some- 

 times sent out in times past, possibly even by myself, as T.fusca or 

 T. rubescens. 



20. — T. solandri Gray. 19 mm. Southern California to Panama. 



21. — Trivia (n. sp.).^ 10 mm. A whitish species, similar to T. 



1 Attn. Mag. Nat. Hist. (7) vol. 6, p. 208, Aug., 1900. 



2 Proc. Zool. Soc, 1832, p. 18^. 



3 This species is about to be described by my young friend, Mr. Raymond, under the name 

 T. ri'tte?-/ ; it is almost identical with some specmiens of T. i'iifo/>a-n, but pure white, [Note 

 added Sept. 20, 1902. — F.L.B.]. 



