THE NATURAL HISTORY SURVEY. 163 
young are difficult to distinguish from profunda,; the bands, 
however, are more numerous in the present species than in pro- 
Sunda (see the latter species for additional remarks). This is 
not a common mollusk and is limited in distribution to the 
southern and western regions. It frequents marshy woodlands 
and loves to be where there is plenty of water, moisture seem- 
ing to be a necessity to its existence. It is one of the most 
beautiful of the larger Helices. At Joliet it ranges in color 
from almost pure white, without bands, through various shades 
of horn to dark purplish or blackish, with bands; the latter 
exhibit every variety of width and number. 
60a. Polygyra multilineata alba Witter. 
Helix multilineata var, alba WITTER, Journ. of Conch., Vol. I, p. 384, 
1878. | 
60b. Polygyra multilineata rubra Witter. 
flelix multilineata var. rubra, WITTER, l. c., p. 384, 1878. 
The varieties alba and rubra are found somewhat sparingly 
at Joliet. The first has a perfectly plain horn-colored shell 
and the latter a plain reddish or chestnut-colored shell, which 
is very beautiful. 
Section STENOTREMA Rafinesque. 
Shell: “Small, compact, imperforate or umbilicate; sub- 
globose, globose-depressed or lens-shaped the periphery vary- 
ing from rounded to acutely keeled; surface dull, smooth, gener- 
ally hairy. WNhorls 5-6, closely revolving, the last suddenly de- 
flexed in front. Aperture basal, narrow, obstructed by an oblique 
blade-like parietal tooth parallel to the refiexed basal lip, the latter 
often notched in the middle. Last whorl generally having in 
its last fourth a short transverse partition on the axis.” ‘Gen- 
ital system having the penis notably longer than the recep- 
taculum semmis and its duct, the latter quite short.’ (Pilsbry, 
fies, pie77.) 
61. Polygyra hirsuta Say, pl. xxix, fig. 9. 
Helix hirsuta SAY, Journ. Phil. Acad., Vol. I, p. 17, 1817. 
Hlelix ? porcina Say, Long's Exped., Vol. II, p. 257, pl. xv, fig. 2, 1824. 
(Young.) 
Helix fraterna Woop, Index, Suppl., p. 21, pl. viii, fig. 16, 1828. 
Flelix sinuata GMELIN (teste Pfeiffer). 
Flelix tsognomostomos GMELIN (teste Pfeiffer). 
Polygyra hirsuta altispira PILSBRY, The Nautilus, Vol. VII, p. 141, 
1894. (Variety.) 
Polygyra hirsuta pilu/a PicssBry, Proc. Phil. Acad., p.132,1900. (Va- 
riety.) 
Polygyra hirsuta uncifera PILSBRY, |. c., p. 453, 1900. (Variety.) 
