208 



flexo, supra calloso, callositate suturam et anfr.penult. tegente ; 

 labio iv.-plicato, et supra dentato. 

 Long. '18, long. spir. (super suturam) '03, lat. '12, div. 120°. 

 Hab. Sta. Barbara, rarissime {Col. Jeuoett). Mus. Gould. 

 Closely resembling the small white species from the Panama, W. 

 ladian and N. African provinces ; but distinguished from all in 

 shape and plications. 



65. CoLUMBELLA Santa-Barbarensis, n. s. 



c. t. elongata, subconica, fusco-aurantia, albido varie pieta ; epi- 

 dermide tenui, transversim striata, munita ; anfr. vii. sub- 

 planatis, suturis distinctis, spiraliter striatis, striis distantibus; 

 apertura subcĮuadrata, inttis violascente ; labro acutiore, vix 

 sinuato, vix denticulato ; labio parvo, plica unica canali con- 

 tiffua ; anfr. j^rimis scepe decussatis. 

 Long. -30, long. spir. '18, lat. -l.i, div. 40°. 

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

 This elegant species is known by its faintly striated surface, violet- 

 tinted, open niouth, and the extremely minute labral denticles. The 

 discovery of this and other species of the genus in the Upper Cali- 

 fornian province, corrects the error as to its northern limlt in Forbes' 

 Zoological Map. Tlie markings of the two specimens sent vary, as 

 in the next species. 



66. ?NlTIDELLA GouLDii, n. s. 



N. t. parva, elongata, conica, Icevi, circa basin spiraliter striata ; 

 anfr. vii. subplanatis, suturis distinctis ; albida, aurantio varie 

 pieta ; apertura subąuadrata, labro sinuato, subacuto, intus 

 conspieue dentato ; labio parvo, Dix crenato ; apice interdum 

 decollato. 

 Long. -32, long. spir. '15, lat. -15, div. 37°. 

 Hab. Sta. Barbara (Jeivett). Mus. Gould. 

 Closely resembling N. cribraria ; distinguished from C. Sta.-Bar- 

 barensis by the smooth vrhirls and apex, and the conspicuous labral 

 teeth. The two specimens examined differ too much from each 

 other in colour-markings to found specific characters upon these fea- 

 tures. 



67. Fusus AMBUSTUS, Gould, p. 12.pl. 14. f. 18. 

 Hab. Mazatlan (Crree«). Mus. Gould. 



68. Purpura patula, Linn, 



Purpura pansa, Gould, p. 33. 



This shell, occurring unexpectedly to Dr. Gould on the Pacific 

 shores, was, according to his theory, described as a fresh species ; 

 the few, poor, young specimens at his disposal affording him supposed 

 points of distinction. These however do not apply to the fine series 

 which has been examined from the Mazatlan coUection. Vide B. M. 

 Cat. in loco. 



