342 THE CHICAGO ACADEMY OF SCIENCES. 
RANGE: Illinois, Indiana, Michigan, Ohio. A form of the humid 
divisions of the Transition and Upper Austral life zones, and of the 
Canadian and Upper Mississippian regions. The range of walkeri will 
probably be found to be coexistent with that of typical reflexa. It has 
doubtless been recorded as reflexa and labeled as such in collections. 
RECORDS. 
UNITED STATES. 
Int1nois: Lake George and Calumet River, Cook Co. (Baker) ; Calumet 
Lake, Cook Co. (Calkins); Joliet, Will Co. (Ferriss) ; Wolf Lake, Cook Co. 
(Jensen) ; Kendall Co. (Hinkley) ; Algonquin and Silver Lake, McHenry Co.; 
Cook Co. (Nason); Stony Island, Chicago, Cook Co. (Zetek). 
INDIANA: Hessville, Lake Co. (Walcott). 
MicuicGaAn: River Rouge, Wayne Co. (Walker); Saginaw Valley, Sagi- 
naw Co. (Walker); Detroit, Wayne Co. (Miss Walker). 
Ounto: Near Cincinnati, Hamilton Co. (Lea). 
GEOLOGICAL RANGE: Unknown. 
Ecotocy: Walkeri lives under much the same conditions as does 
reflexa. 
REMARKS: /lValkeri is distinguished by its very long, scalar spire 
and the narrowness of the shell compared with its length; the whorls 
are generally well rounded. While this variety is quite distinct in 
some localities, it is found in other places to gradually grade into typical 
reflexa. The variety is distinguishable from reflexa, the characteristics 
of the long, well-rounded whorls, narrow shell, deep sutures and the 
absence of the rapid enlargement of the last two whorls being sufficient 
to cause its immediate recognition. From an ecological point of view, 
as walkeri is the dominant form in some localities, it seems quite de- 
sirable to recognize it as a race. Specimens raised in the greenhouse 
of the University of Chicago were all referable to walkeri. It lacks 
the “puffy” aspect of the penultimate whorl, so markedly developed 
in typical reflexa. 
Galba reflexa hemphilliana (Baker). Plate XXXVI, figures 
19-20. 
Limnea reflexa hemphilliana Baxer, Nautilus, XVIII, p. 11, May, 1904. 
SHELL: Elongate-ovate, rather solid; color light horn; surface 
shining, with distinct spiral lines; whorls six, very flat-sided, somewhat 
oblique, loosely coiled; nuclear whorls very dark red; spire short, wide, 
acutely pyramidal, about as long as the aperture; sutures not deeply 
impressed ; aperture ovate, or elongate-ovate ; peristome thin, bordered 
by a red-banded internal rib; inner lip narrow, reflected and almost 
closing the umbilicus, leaving a very small chink; the columella is 
slightly twisted and there is a rather heavy ascending plait. The sur- 
face is lightly malleated. 
