176 THE CHICAGO ACADEMY OF SCIENCES. 



spermatheca (sp.) is large, subglobular, and together with its 

 rather long duct, is bound firmly to the oviduct. The albumen 

 gland (a. gl.) is uncommonly large"* (Fig. 31). 



Jaw and Radula: See 0. fuliginosa. 



Distribution: North America. 



65 Omphalina fuliginosa Griffith, pi. xxviii, fig. 15. 



Helix fuliginom GRIFFITH in Letters; BINNEY, Terr. Moll., Vol. II, 



p. 222, pi. xxxi, 1851. 

 Helix capillacea PFEIFFER, Symbolae, Vol. II, p. 24, not FER., teste 



PER. 



Omphalina cuprea RAFINESQUE, Enum., etc., p. 3. 

 Omphalina fuliginosa polita Pilsbry, The Nautilus, Vol. XI, p. 129; 



Vol. XII, p. 86, 1898. (Variety.^ 



Shell: Depressed above, globose below, thin, umbilicated; 

 surface shining, covered with very fine lines of growth, which 

 seem to disappear on the apical whorls; color greenish-horn or 

 chestnut; periphery rounded; sutures little impressed, but 

 well marked; whorls six and one-half, rounded, rapidly increas- 

 ing, the last very large and expanding; spire almost flat; aper- 



FIG. 32. 

 Animal of OMPHALINA FULIGINOSA Griffith. (After Binney.) 



ture large, oblique, lunately ovate, frequently showing irides- 

 cence within; peristome simple, very thin and brittle, a thin 

 testaceous deposit within; columella slightly reflected, termi- 

 nations of the aperture approaching, often connected t>y a 

 light, testaceous deposit; umbilicus narrow, deep; base of shell 

 globose. 



Greater diameter, 16.00; lesser, 14.00; height, 10.50; umbilicus diame- 

 ter, 175 mill. (7732.) 



Animal: (Fig. 32). With a long, narrow foot, broad be- 

 fore and obtusely pointed behind; color black; head, neck and 

 eye-peduncles very dark; eye-peduncles of medium length, 

 widely separated, tapering, with the eyes placed at their ex- 

 tremity; under part of foot whitish or grayish, the locomotive 

 portion separated from the upper part by several scarcely dis- 

 tinguishable furrows; pedal grooves extending along the sides 



*Pilsbry, Proc. Phil. Acad., 1894, p. 14. 



