LYMNZID OF NORTH AMERICA. 443 
Binneyi varies greatly in size as well as in the tumid character of 
the whorls. The majority of the specimens are uniform in size and do 
not vary markedly from Tryon’s types, in the Philadelphia Academy 
of Natural Sciences. In the lot from Lake Superior, however, there 
are several individuals which are double the normal size, one speci- 
men having a large patulous aperture (pl. XLVI, fig. 17). The spire 
also varies somewhat in height. The umbilical chink is usually (and 
normally) rather large and deep and is overhung or emargined by the 
inner lip somewhat as in emarginata. Occasionally a specimen occurs 
in which the inner lip is so closely applied to the parietal wall as to 
nearly or quite close the umbilicus and form a conspicuous plait (pl. 
XLVII, fig. 17). The aperture varies from ovate to elliptical. Some 
specimens from Rainy Lake, Ontario, have a large aperture and a very 
short, broad spire. The majority of specimens from this locality are 
quite normal. Specimens from Lake Louise, near Banff, are narrower 
than typical binneyi, but are otherwise similar (plate XLVI, figures 9- 
11). An examination of the axis of this species shows that it is not 
gyrate nor particularly twisted, excepting in abnormal specimens, and 
it cannot therefore, be correctly placed in the section Radix. 
The Lake Superior lot of binneyi is in all respects like Tryon’s 
types from Hell Gate River, Montana, thus extending the range of 
this species many miles eastward. The western references to emar- 
ginata undoubtedly refer to this species as emarginata does not occur 
west of the Rocky Mountains, binneyi replacing it. A specimen labeled 
emarginata in the Smithsonian collection (from Sawtooth Lake, Idaho) 
proved, upon examination, to be typical binneyi (pl. XLVI, fig. 12). 
Figure 15, on plate XLVII, is almost identical with Tryon’s type as 
well as his figure. The specimen figured by Binney on page 43 (1. c.) 
is probably a scalariform individual of binneyi and not referable to 
randolphi. Specimens from the same lot examined recently are all re- 
ferable to binney. 
Galba apicina Lea. Plate XLVI], figures 19-29; plate Sc Val 
figure 1. 
Lymnea apicina Lea, Trans. Amer. Phil. Soc., VI, p. 102, pl. 23, fig. 94, 
1839; Obs., II, p. 102, 1839-——WueEatLey, Sh. U. S., p. 23, 1845——Scupper, Bull. 
Nat. Mus., 23, pp. 20, 200, 1885. 
Limnea apicina Goutp, Wilke’s Exped., p. 122, 1852. 
Limnea apicina Crr., Rep. Brit. Assoc., pp. 210, 216, 1856—BinNEY, Check 
List, p. 12, 1860; L. & F.-W. Sh. N. A., II, p. 62, fig..98, 1865. 
Limneas apicinus TroscHet, Archiv. fiir Natur., II, p. 224, 1839—KUsTER, 
Conch. Cab., p. 48, taf. 8, figs. 31-33, 1862. 
