PAPERS ON ZOOLOGY 167 
60. FF. shieki Pilsbry—Salt Fork, Urbana, Champaign Co. 
In the collections of the Ill. State Lab. Nat. Hist. Special at- 
tention was paid to the Ancylide to rediscover shimeki, but 
none were located. 
61. FH. tardus Say—Sangamon River at White Heath, Piatt 
Co., on stones and empty Anodonta valves, usually among rich 
algal growth, preferring quiet, shallow water. It was found 
at Urbana, Crystal Lake, and in the Salt Fork. See remarks 
under kirklandi. Mr. Charles A. Hart collected it at Muncie, 
on rocks in Stony Creek. 
GENUS GUNDLACHIA Pfeiffer, 1850 
Subgenus Kincaidella Hannibal, 1912 
62. G. meekiana Stimpson—Crystal Lake, Urbana, abund- 
ant on floating sticks; April. After the Salt Fork was dredged 
and the waters of Crystal Lake became ponded, this interesting 
limpet disappeared. 
Family Lymneide 
Subfamily Lymneine 
GENUS LYMNHA Lamarck, 1799 
Subgenus Pseudogalba Baker, 1915 
65. L. humilis Say var. modicella (Say)—White Heath, 
Piatt Co., Crystal Lake, Champaign Co., Muncie, Vermilion 
Co. Very abundant, on sticks and woods, on muddy bottoms, 
etc., stones, of slow moving streams or ponds. It prefers the 
marginal zone, often entirely out of the water on damp, or 
moist mud banks; sometimes quite distant from water. At the 
Brownfield Woods it was present in the intermittant stream, 
a stream which was usually dry. This Lymnaea endure much 
dessication. It is associated mostly with L. parva and Physa 
gyrina. 
64. DL. obrussa (Say)—Urbana, Salt Fork, Crystal Lake, 
Champaign Co. In ponded waters, among leaves; also in 
small streams with sluggish current, upon sticks, leaves, stones, 
etc. It also can endure considerable dessication. 
65. L. parva (Lea)—Salt Fork, Crystal Lake, Champaign 
Co., associated with L. humilis modicella and of more or less 
the same general habits. Not very common. 
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