PUPA. 



235 



Fig. 402. 



Pupa lllandi, Morse.— Shell rimate, ovate cylindrical, <lelicately 

 striated, opaque, light brown ; apex obtuse, nucleus with microscopic 

 granulations ; suture well defined ; whirls sis, subcouves, 

 the 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, with three obtuse teeth of about equal 

 size, one on the parietal margin, one on the columellar 

 margin, and the third far within and at the base of aper- 

 ture ; peristome subreflected, the margins joined by a 

 thin callus. Length .13 inch, breadth .06 inch. (.Vorse.) 



Papilla hlandi, MoBSE, Ann. N. Y. Lye. VIII, 211, f. 8 



(Nov. 1865). 

 Pupa hlandi, W. G. Binney, Expl. in Nebraska, Ex. Doc. 25th Congress, 



2d Sess. II, part 2, p. 725 (1859), no descr. 



In drift on Missouri River, near Ft. Berthold. 



Pupa hlandi. 



Fig. 403. 



l*upa hoppii, Moller. — Shell subperforate, cylindrically ovate, 

 thin, very delicately striated, horn-colored, shining, pellucid ; spire termi- 

 nating in an obtuse cone ; whirls five, rather convex, the 

 last scarcely equalling two-fifths the shell's length, ascend- 

 ing above, somewhat narrowed towards the base ; columella 

 deeply subplicate, parietal wall of the aperture furnished 

 with one tooth-like callus ; aperture vertical, subsemi- 

 circular ; peristome thin, scarcely expanded, its right termi- 

 nation quite arched. Length 2|, diam. 1 mill. 



Puj>a hoppii. 



Pupa hoppii, Moller, Ind. Moll. Gr. 4 (1842). — Troschel, 

 Arch. f. Nat. 1843, II, 126.— Chemnitz, ed. 2, 163, pi. 

 xix, f. 29, 30.— Pfeiffer, Mon. Hel. Viv. II, 328 ; III, 

 536 ; IV, 666.— W. G. Binney, Ter. Moll. IV, 147, pi. Ixxviii, f. 20. 



Pupa steenhuchii, Beck, teste Mobch, Nat. Bidrag af Gr. 75. 



Inhabits Greenland, and has also been found at Anticosti 

 Island. 



The description given above is translated from Pfeiffer. The 

 specimen figured, which I refer to this species, has another 

 denticle on the columella, and a lamina-like process within the 

 aperture at the base of the last whirl. 



