. Bulletin. Natural history; Natural history. 100 Illinois Natural History Survey Bulletin Val. 28, Art. the distribution map by hollow symbols: Champaign County: Champaign (H. Garman 1892) ; Cook. County: Chicajio (Schmidt & Necker 1935) ; Du Page Coun- ty: Naperville (Schmidt & Necker 1935); Jackson County: 4 mi. S Carbondale "(Burt & Burt 1929); Kane County: Ba- tavia, West Dundee (Stille & Edgreii 1948); Lake County: Fox Lake (Schmidt & Necker 1935); McHenry County: Mc- Henry, Richmond (Schmidt & Necker 1935); LTnion County: 7 mi. S Anna (Burt & Burt 1929)
. Bulletin. Natural history; Natural history. 100 Illinois Natural History Survey Bulletin Val. 28, Art. the distribution map by hollow symbols: Champaign County: Champaign (H. Garman 1892) ; Cook. County: Chicajio (Schmidt & Necker 1935) ; Du Page Coun- ty: Naperville (Schmidt & Necker 1935); Jackson County: 4 mi. S Carbondale "(Burt & Burt 1929); Kane County: Ba- tavia, West Dundee (Stille & Edgreii 1948); Lake County: Fox Lake (Schmidt & Necker 1935); McHenry County: Mc- Henry, Richmond (Schmidt & Necker 1935); LTnion County: 7 mi. S Anna (Burt & Burt 1929) ; Will County: Hick- ory Creek (Necker 1939f) : Marley, New Lenox (Schmidt & Necker 1935) ; Romeo- ville (Necker \939c). Rana palustris Le Conte Pickerel Frog Kana palustris Le Conte 1825:282 (type local- ity: not given; suggested as vicinity of Philadelphia, Pennsylvania, by Schmidt 1953) ; Brendel 1857:254. Diagnosis.—A small to medium-sized Rana (largest Illinois specimen mm. from snout to vent), fig. 86, with distinct square or rectangular, brown or blacli blotches arranged in two more or less regu-| lar series between the dorsolateral folds] dorsolateral folds yellow, extending to the hip region, and approximately half the widtl of the dorsal blotches; groundcolor gray oi tan; concealed surfaces of hind legs anc often the belly with a wash of bright yellowJ Variation.—The male pickerel frog ha( enlarged thumbs, each of which bears small pad on its inner surface. According to Pope (1944/*), the male is usually darker] larger, and more fully webbed between the toes than the female. In our series, how-j ever, the female averages larger, and Walkei (1946) noted that females are larger ir Ohio specimens. No small specimens are available foi study. Young frogs observed in the field] however, seemed to differ from adults ir their proportionately larger heads anc smaller legs. Two races of the pickerel frog, differing in pattern details and proportions, are pres-j ent
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
