188 



A MANUAL OF AMERICAN LAND SHELLS. 



Family PUPID^. 



PUPA. (8<'e below. 

 Pupa Blaiidi, Morse. 

 Shell rimate, ovate-cylindrical, delicately striated, opaque, lightbrown ; 

 Fig. 188. apex obtuse, nucleus with microscopic granulations; 



suture well defined; whorls 6, subconvex, llie last 

 ascending' at the aperture, rapidly expanding, with 

 an external whitish callus, between which and the 

 peristome there is a deep constriction ; aperture 

 small, nearly circular, witli .'? obtuse teeth of about 

 equal size, one on the parietal margin, one on the 

 coluraellar margin, and the third far within and 

 at the base of aperture ; peristome subreflected, 

 the margins joined by a thin callus. Length, .13 

 inch; breadth, .06 inch. (Morse.) 



Puinlla Blandi, Morse, Ann. N. Y. Lye, viii, 211, tig. 8 (Nov., 

 1865).— Tryon, Am. Journ. Conch., iii,303 (1868). 



Pupa Blandi, W. G. Binney, Expl. in Nebraska, Ex. Doc. 

 25th Congress, 2d sess., ii, part 2, 725 (1859), no 

 descr. ; L. & Fr.-W. Sh., i, 235, tig. 402 (1869); 

 Terr. Moll. ,v, 198. . 



In drift on Missouri Eiver, near Fort Berthold, and in Dakota and 

 Colorado. It is evidently a species of tlie iSTorthern Kegion, but ex- 

 tending into the Central Province on the mountain ranges. 



Animal unknown. 



Pupa borealis, Morelet. 



Shell rimate, ovate-oblong, shining, diaphanous, reddish horn-color, 

 with miscroscopic revolving striie; whorls G, rather convex, the last 

 compressed below^, forming a medium-sized excavation ; aperture some- 

 what rounded-oval, moderate, four-toothed, one deep, foldlike, on the 

 parietal wall, one columellar, the rest smaller, palatal; peristome simple, 

 straight, its columellar extremity slightly dilated above. Length, 3"""; 

 width, 1.V"". (Morelet.) 



Pupa borealis, Morelet, Journ. de Couch., vii, 9 (1858).— W. G. Binney, Terr. 

 Moll., V, 201. 



An Asiatic species, said alSo to be found in Alaska. 



Animal unknown. 



Eeferred by Eeinhardt to Pujm decora. A specimen from Morelet's 

 original locality, kindly furnished by Mr. Dall, is in the Smithsonian 

 collection. 



Pupa Blandi, en 



