. Bulletin. Natural history; Natural history. Fig. 101 .âRoadside ditch, % mi. W Winterrowd, Effingham County, Illinois. 3 f^/lay 1977; typi- cal habitat for Procambarus Fig. 102.âCapped entrance to burrow of Procambarus gracilis in a field in Des Plaines, Cook County, Illinois, 15 June 1972. Males ( Form I) _i ca 5 -1 0 5 0 rH â T Females if - 1 nnâ^^ 5 10 15 I 20 â1â 25 CL 1 30 I 35 40 Fig. 103.âSize-frequency distribution of Procambarus gracilis collected in northeastern Illinois, June 1972. females 182 to 157 (:1). Very small specimens ( mm CL) and maybe e\fn to a fourt
. Bulletin. Natural history; Natural history. Fig. 101 .âRoadside ditch, % mi. W Winterrowd, Effingham County, Illinois. 3 f^/lay 1977; typi- cal habitat for Procambarus Fig. 102.âCapped entrance to burrow of Procambarus gracilis in a field in Des Plaines, Cook County, Illinois, 15 June 1972. Males ( Form I) _i ca 5 -1 0 5 0 rH â T Females if - 1 nnâ^^ 5 10 15 I 20 â1â 25 CL 1 30 I 35 40 Fig. 103.âSize-frequency distribution of Procambarus gracilis collected in northeastern Illinois, June 1972. females 182 to 157 (:1). Very small specimens ( mm CL) and maybe e\fn to a fourth (to 47 nnn CL).. 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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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
