368 Illinois State Laboratory of Natural History. 



C. acutissimus Girard. Proc. Phila. Acad, vi, 91 (1852). 

 Hab. — Louisiana, Mississippi, Alabama, South Carolina, Tennessee, 

 Missouri, Illinois, Indiana, Iowa, Wisconsin. 



10. C. Carolinus Hagen (type). — Faxon. Proc. Amer. 

 Acad. XX, 140 (1844); Revision of Astacidae, 54 (1885). 



C. advena Hagen. Monog. Astacidge, 86, pi. i, figs. 90-92 

 (^1870). 



Hah. — South Carolina. 



11. C. Clarkii Girard, Proc. Phila. Acad, vi, 91 (1852). 

 —Hagen. Monog. Astacidae, 39, pi. i, figs. 7-10, 99, 100, pi. ii, 

 figs. 133, 134, pi. iii, fig. 142, pi. iv (1870).— i^a.row. Proc. 

 Amer. Acad, xx, 136 (1884); Revision of Astacidse, 26 (1885). 



Hah. — Texas, Louisiana, Mississippi, Alabama, Florida. 



12. C. coMPRESSUS Faxon. Proc. Amer. Acad, xx, 127, 146 

 (1884); Revision of Astacidae. 105, pi. v, fig. 6, pi. x, figs. 2, 2', 

 2a, 2a' (1885). 



Hah. — Alabama. 



13. C. CORNUTUS Faxon. Proc. Amer. Acad, xx, 120, 145 

 (1884); Revision of Astacidae, 80, pi. v, figs. 1, 2, pi. ix, figs. 

 3,3' (1885). 



Hah. — Kentucky. 



14. C. DIOGENES Girard. Proc. Phila. Acad, vi, 88 (1852). 

 —Faxon. Proc. Amer. Acad, xx, 144 (1884); Revision of As- 

 tacidae, 71 (1885). 



C. obesHS Hagen. Monog. Astacidae, 81, pi. i, figs. 39-42, 

 pi. iii, fig. 163, pi. ix (1870). 



Hah.—'^ew Jersey, Maryland, District of Columbia, Virginia, North 

 Carolina, Ohio, Indiana, Illinois, Michigan, Wisconsin, Iowa, Missouri, 

 Kansas, Colorado, Wyoming, Arkansas, Kentucky ? Mississippi, Louis- 

 iana. 



15. C, DUBius Faxon. Proc. Amer. Acad, xx, 114, 145 

 (1885); Revision of Astacidae, 70, pi. iv, fig. 3, pi. viii, figs. 7, 

 7' (1885). 



Hab. — Virginia, West Virginia, Tennessee. 



16. C. EXTRANEUS Hagen. Monog. Astacidae, 73, pi. i, figs. 

 88, 89, pi. iii, fig. 156 (1870).— i^a;row. Proc. Amer. Acad, xx, 

 145 (1884); Revision of Astacida, 84 (1885). 



Hah. — Georgia. 



