. Bulletin. Natural history; Natural history. November, 1961 Smith: Amphibians and Reptiles of Illinois 227. Fig. 214.—An adult Thamnopliis sauritiis proximus from Union County, Illinois. The groundcolor is black; the middorsal stripe, orange; the lateral stripes and venter are greenish white. Table 65.—Sexual variation in Illinois Thamnophis sauritus. Figures in parentheses are numbers of specimens. Characteristic Ventrals Caudals Tail length as percentage of total length Males (15) Range Mean 166-181 108-131 Females (22) Range Mean 163-177 83-114 10
. Bulletin. Natural history; Natural history. November, 1961 Smith: Amphibians and Reptiles of Illinois 227. Fig. 214.—An adult Thamnopliis sauritiis proximus from Union County, Illinois. The groundcolor is black; the middorsal stripe, orange; the lateral stripes and venter are greenish white. Table 65.—Sexual variation in Illinois Thamnophis sauritus. Figures in parentheses are numbers of specimens. Characteristic Ventrals Caudals Tail length as percentage of total length Males (15) Range Mean 166-181 108-131 Females (22) Range Mean 163-177 83-114 Table 66.—Geographic variation in Illinois Thamnophis sauritus. Figures in parentheses are numbers of specimens. Richland- Characteristic Northwestern Illinois (8) Southwestern Illinois (22) Wabash Counties (7) Range Mean Range Mean Range Mean Ventrals Male 170-181 166-181 165-173 Female 165-172 163-177 165-167 Caudals Male 111-114 108-131 120-124 Female 83-103 9 -114 110-111 Tail length as percentage of total length Male Female Per Cent of Per Cent of Per Cent of Supralabials Specimens Specimens Specimens 7 + 7 42,8 7 + 8 8 + 8 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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