. Bulletin. Natural history; Natural history. August 1985 Crayfishes and Shrimps of Illinois 429 1969, 1972a; Page 1974b: Peck & Lewis 1977), C. ornalus (Peck & Lewis 1977), and C. teuebrosus (Peck & Lewis 1977). It now appears that the correct name for the southern Illinois populations is C. teuebrosus. Populations extend across the Shawnee Hills of southern Illinois, into the Cumberland River drainage of western Kentucky, and into the general range of C. teuebrosus with no notice- able mor|)hological discontinuities. In \'ermilion County in east-central ^^. "K^uX^^jti Fig. 1


. Bulletin. Natural history; Natural history. August 1985 Crayfishes and Shrimps of Illinois 429 1969, 1972a; Page 1974b: Peck & Lewis 1977), C. ornalus (Peck & Lewis 1977), and C. teuebrosus (Peck & Lewis 1977). It now appears that the correct name for the southern Illinois populations is C. teuebrosus. Populations extend across the Shawnee Hills of southern Illinois, into the Cumberland River drainage of western Kentucky, and into the general range of C. teuebrosus with no notice- able mor|)hological discontinuities. In \'ermilion County in east-central ^^. "K^uX^^jti Fig. 163.—Spring emptying into Big Creek in Hardin County, Illinois (8 October 1984). This and other springs in the Shawnee Hills provide the best habitat in Illinois for Cambarus tene- 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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