204 



postice et antice late rotundata ; columella valde arcuata, vix 

 callosa. 

 "Bulla (Haminea) vesicula. About the size and general appear- 

 ance of B. rotundata, A. Adams ; not so large a body ; aperture 

 larger." — Gould, MS. 



Hah. San Diego ; legit W. P. Blake. 



40. Nacella dkpicta, Hinds. 



Patelloida depicta, Hinda, Ann. Nat. Hist. x. p. 82 ; Voy. Sulph. 

 Moli. p. 53. no. 217. 



Acmcea paleacea, Gould, p. 3. pi. 14. f. 5. 



41. Omphalius Pfeifferi, Phil. 



Trochus marcidus, Gould, p. 8. pi. 14. f. 1 1. 



Comp. Chlorostoma maculosiim, A. Ad. — Philippi's name is giveu 

 on the important authority of Mr. Cuming. Dr. Gould's shell seems 

 more likę that of A. Adams ; whįle his Trochus Montereyi, Kien., 

 appears to be T, Pfeifferi, Phil. 



42. OsiLINtrS GALLINA, vaf. 



Trochus (Monodonta) pyriformis, Gould, p. 9. 



43. LivoNA PICA, Linn. 

 Trochus picoides, Gould, p. 8. 



This species is said to have been taken alive at Santa Barbara by 

 Col. Jewett, who brought home five specimens. Dr. Gould, for 

 geographical reasons, describes them as a distiuct species. The exclu- 

 sive pecuharities assigned to the Pacific shells are often seen in the 

 very variable W. Indian specimens. The dead shell sent by Dr. 

 Gould was unhesitatingly prouounced by Mr. Cuming to be the true 

 Trochus pica, Linn. It did not occur in the Mazatlan coUection, nor 

 has it been found by Messrs. Cuming, Hinds, C. B. Adams, Nuttall, 

 Kellett, Belcher, Chiron, Shipley, Hartweg, or any other of the care- 

 ful explorers of the Pacific coast. 



44. Phasianella compta, Gould, MS. 



" Ph. t. parva, solida, ovato-conica, imperforata, polita, cineras- 

 cente, lineis minutis olivaceis, oblique volventihus, ornata; anfr. 

 iv. rotundatis, ultimo ad peripheriam subaiigulato, et interdum 

 tessellatim fasciato ; apertura circulari ; labro tenui, albo ; 

 columella planulata, alba ; faucibus callo incrassatis." 



Variat t. rubida, ut in Ph. perforata pieta. 



Hab. Sta. Barbara (^Col. Jemett) ; San Diego {Br. Webb, W. P. 

 Blake). Mus. Gould. 



For the differences between this species and the equatorial Ph. 

 perforata, vide B. M. Maz. Cat. p. 225. no. 284. 



45. Crucibulum corrugatum, n. s. 



C. t. compacta, conica, solida, alba ; costis irregularibus angustis, 

 haud acutis, primumpaucis, postea plurimis, corrugatis ; inter- 



