206 



anfr ii.; apertura mbąuadrata, sinu minimo, labio haud ex- 

 panšo; operculo subplanato, nucleo mucronato anfr. plunmvs 

 indistinctis,fusco, ad marginėm tenuissimum diaphano. 

 Long. -8, long. spir. -57, lat. -33, div 20 . 

 Hah San Dieeo ; legit Dr. Webb. Mus. Gould. 

 f iafromC ^-arfco^a var. Mazatlanica, by the light purplish- 

 brown dugel the colour of which wears off at the vances and nodules, 

 and by the details of sculpture. 



51. Cerithidea (Tsacrata, var.) fuscata, Gould, MS. 

 Cerithium {Potamis) sacratum, Gould, Exp. Shells, p. 60. 

 Pirena Californica, Nuttall, MS. 



" C t. turrita, gracili, sofida, rudi, fusco-cinerea; anfr. ad x. 



convea^iusculi^ plicis circiter xvi. longitudrnahbus arenoj 



compressis, instructis, et filis ad v. volvenUbus c^ncHs^ ultj^H 



iii. varices ferentibus ; apertura parva, subcirculan, basi vtx 



effusa vel contorta ; labro expan80, nitide rufo-mgncante. 



"Long. 1-25, lat. '4 poli. , , .^ v 



" Potlmis fuscata. Distingvushed from P sacrata by its much 



more slender form, small size, colour of aperture, and longitudinal 



Ss. It varies įreatly in proportions, and sometimes displays a 



delicate, ochraceous revolving line."— GoM^rf, M!i. 



This shell is regarded by Mr. Nuttall and myself as a variety ot 

 the very variable C. sacrata. ^ u 



Hab. San Diego ; legit W. P. Blake. Mus. Gould. 



52. Erato ?columbella, Mke. Zeit. f. Mal. 1847, p. 183. 



no. 26. f on 



Erato leucophcea, Gould, p. 13.pl. 14. t. M- 

 Hab. Sta. Barbara {Jewett). Mus. Gould. 



53. EURYTA FULGURATA, Phil. 



Terebra arguta, Gould, p. 7. pi- H. f. 19 ; vide B.M. Maz. Cat. 

 in loco. 



54. CoNUS RAVUS, Gould, p. 13. pi. 14. f. 21. 

 Hab. Sta. Barbara {Jevoett). Mus. Gould. 



55. CoNUS PURPURASCENS, SoW. 



Comis comptus, Gould, p. 14. pi. 14. f. 23. p„ .„^ ^„ u. „ 



Dr Gould' s type specimen is pronounced by Mr. Cutning to be a 



worn young spedmen of that previously described. t is probably. 



^ Drf G. supposes. the C. achatinus of Menke's catalogue. 



56. CoNUS pusiLLTJS, Gould, p. 15. pi. 14. f. 22. 

 Hab. Mazatlan {Jetoett). Mus. Gould. 



57. Obeliscus achates, Gould. 

 Odostomia achates, Gould, p. 12. pi. 14. f. 13. 

 Comp. Obeliscus clavulus, A. Ad. 



Hab. Mazatlan {Jevoett). Mus. Gould. 



