. Bulletin. Natural history; Natural history. November, 1961 Smith: Amphibians and Reptiles of Illinois 105. Fig. 89.—An adult Rana pip'iens pipiens from Porter County, Indiana. The groundcolor may be green, gray, or tan; the spots are usually brown. Note spot on snout. (Photo by Isabcile Hunt Conant.) Table 27.—Geographic variation in Illinois Rana pipiens pipiens and R. p. pipiens X sphenocephala intergrades. Figures in parentheses are numbers of specimens. Characteristic North- eastern Ilmnois (18) With snout spot (per cent of specimens). . With average dorsal spot smaller than eye (per cen
. Bulletin. Natural history; Natural history. November, 1961 Smith: Amphibians and Reptiles of Illinois 105. Fig. 89.—An adult Rana pip'iens pipiens from Porter County, Indiana. The groundcolor may be green, gray, or tan; the spots are usually brown. Note spot on snout. (Photo by Isabcile Hunt Conant.) Table 27.—Geographic variation in Illinois Rana pipiens pipiens and R. p. pipiens X sphenocephala intergrades. Figures in parentheses are numbers of specimens. Characteristic North- eastern Ilmnois (18) With snout spot (per cent of specimens). . With average dorsal spot smaller than eye (per cent of speci- mens) With external vocal sac (per cent of males) iSnout-vent length (mm.), maximum. .. 0 0 NORTH- Vi^ESTERN Illinois (231 0 0 Hender- son- Warren Counties (14- 72,0 0 0 Cham- paign- Vermilion Counties (9) 0 Coles County (20 J 40,0 96,2 Mason- Morgan Counties (24) 33,0 71,0 36,0 84,0. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Natural History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division
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