246 THE CHICAGO ACADEMY OF SCIENCES. 
the genital bladder is large, ovate, on a long, narrow duct.” 
(W. G. Binney.)* 
Distribution: North America, Europe, Madeira, Australia. 
98. Cochlicopa lubrica Miiller, pl. xxx, fig. 17. 
Helix lubrica MULLER, Verm. Hist., Vol. I, p. 104, 1774. 
Bulimus lubricoides STIMPSON, Shells of N. E., p. 54. 
Cionella (Zua) morseana DOHERTY, Quart. Journ. Conch., Vol. I, p. 342, 
pl. iv, fig. 2, 1878. (Variety.) 
Helix (Ferussacia) subcylindrica AUCT., non LINNE. 
Ferussacia lubrica of various authors. 
Shell: Small, elongate oval, pellucid, smooth, shining, 
transparent; surface covered with very fine growth lines, apex 
smooth; color smoky-horn; whorls six, convex, gradually and 
somewhat regularly increasing in size, each whorl being about 
twice the size of the one preceding, and the last being almost 
one-third the length of the entire shell; sutures impressed; 
Fig. 74. 
Animal of COCHLICOPA LUBRICA Miiller. (Binney, Fig. 199.) 
spire conical, apex obtuse; aperture long-oval, the plane of 
the aperture parallel, or nearly so, with the axis of the shell; 
peristome simple, thickened, tinged with reddish; its termina- 
tions separated and connected by athin callus; columella trun- 
cated at base, and somewhat sinuous at its junction with the 
peristome; umbilicus closed; base of shell rounded. 
Length, 5.75; diam., 2.00; aperture length, 2.00; diam., 1.00 mill. (10282.) 
« 6.25; “ 2.25; : sf Cates att 125 “  (10131.) 
ss 6.0); -“ 2.00; dy s da 3 saan ts ler 2; abana r (Np 13h | 
Animal: With a short, wide foot, truncate before and 
pointed behind; color bluish-black above, lighter below, espe- 
cially on the foot; eye-peduncles long, thick, cylindrical, the 
eyes placed on prominences at their tips; tentacles very short, 
blunt; other characters as in the genus. Length of foot 6.00, 
width 2.00 mill. (Fig. 74). 
Jaw: As described in the genus (Fig. 75, J). 
Radula formula: 78,+$+8+4+4+4+ 58, (23—I—23): 
central tooth with a base of attachment much longer than wide, 
*Man. Amer. Land Shells, p. 195. 
