160 THE CHICAGO ACADEMY OF SCIENCES. 
Sanctemarie has a superficial resemblance to Hemphill’s occi- 
dentalis, but differs in lacking the decided shoulder so characteristic 
of the latter race. Prof. Cockerell (op. cit.) refers sanctemarieé to 
his var. compressa (fig. 9, p. 79, Williams ‘“‘Shell-Collectors’ Hand- 
book.” ) The figure, however, is quite different from sanctemarie and 
does not particularly resemble any of our American species. Several 
European Lymnzas somewhat resemble sanctemarie. Thus Lymnea 
doriana Bourg. (Spic. Mal., p. 100, pl. 12, figs. 9-10) seems similar but 
the whorls in the American race are not so rounded and the body 
whorl is more flattened at its posterior extremity. Cockerell’s variety 
expansa (Science Gossip, XXI, p. 179, fig. 121, 1885 non expansa 
Hald. 184) is somewhat similar in form. These are all apparently 
cases of parallel development. 
Lymnea stagnalis occidentalis Hemphill. Plate XXIII, figures 
4-5, 
Limnea stagnalis var. occidentalis HEMPHILL, Nautilus, IV, p. 26, 1890— 
Keep, West Amer. Sh., p. 313, 1904. 
SHELL: Quadrangularly inflated, thin, fragile; color light horn; 
spire short and acute, set abruptly on the body whorl, which is very 
large and quadrangularly inflated; suture impressed; the whorls are 
considerably shouldered, especially the body whorl; aperture long- 
ovate, more than twice the length of the spire; axis strongly gyrate. 
forming a well-marked plait; callus closely appressed to the parietal 
wall; whorls five; sculpture of the usual character, and often marked 
by strong spiral and longitudinal raised ridges, giving the surface a 
malleated aspect; a small umbilical chink is sometimes present. 
Length. Breadth. Aperture length. Breadth. 
35.00 21.00 23.00 14.00 mill. Type. 
33.00 21.00 22.00 lO OMier rs 
35.00 21.00 22.00 142000 5 - 
Type: Coll. Henry Hemphill. 
Type Locatity: Lake Whatcom, Washington. 
ANIMAL, JAW, RapDULA AND GENITALIA: Unknown. It is ex- 
ceedingly unfortunate that Mr. Hemphill did not think of the carnivor- 
ous propensities of Circinaria vancouverensis when he placed the two 
living specimens of this species in the box with them, because the 
anatomy of occidentalis is now a desideratum. 
RANGE: State of Washington, from whence it is only known at 
present. 
RECORDS. 
WaAsHINGTON: Lake Whatcom, Whatcom Co. (Hemphill). 
GEOLOGICAL RANGE: Unknown. 
