Description of a New Species of Pupa. 23 7 



XXYII. — -DesGription of a Xew Species of Popa from 



California. 



By the Rev. J. Rowell, of San Francisco, Cal. 



(Communicated by Mr. W. Cooper.) 

 Eead Ttli January, 1861. 



Pupa Calirornica, noT. sp. 



T. riraato-subperforata, elongato-ovata, tenuiuscnla,fa3Co-cornea, oblique 

 costulato-striata ; apice obtusa ; sntura profunda ; anfr. 5-6 convexis, 

 ultimo ad aperturara parum compresso ; apertura obliqua, suborbiculari, 

 denticulis 4 albis armata ; 1 valido, lamelliformi, subtorto, in pariete 

 aperturali, 1 ad columellara, 2 prope basin, profuude immersis ; pcrist. 

 expansiusculo, columellari subreflexo. 



Shell rimate subperforate, elongate ovate, thin, dark 

 horn colored, with oblique rib-like striae ; apex obtuse ; deep 

 suture ; with 5-6 convex whorls, the last a little compressed at 

 the aperture ; aperture oblique, snborbicular, armed with four 

 white denticles ; one lamellitbrm, strongly developed, slightly 

 twisted, on the parietal wall, one on the columella, and two 

 deeply seated within or near the base of the aperture ; peri- 

 stome slightly expanded, columellar margin somewhat reflected. 



Long. 2^ ; diam. 1 mill. 



Habitat. — San Francisco, California. 



Remarks. — I have collected a considerable number of this 

 species of Pupa. One other only, P. Rowellii Newc, has 

 hitherto been found on the Pacific Coast of the United States. 



JAN. 1861. 20 ^''^'^- ^^'^- N^*' Hj8t. You VII. 



