^32 Illinois State Lahoratorij of Natural History. 



19. C. THOMASi Forbes. Amer. Nat. xvi, 649 (1882). 

 — Cragin. Trans. Kansas Acad. Science (1883). — Herrick. 

 FinalReport, 153 (1884). 



Hub. — Massachusetts (Cragin), Lake Michigan (Forces). 



20. C. UNiANGULATUS Cragin. Trans. Kansas Acad. 

 Science {188S).— Herrick. Final Report, 149 (1884). 



Hab. — Massachusetts ( Cragin). 



21. C. viKiDis Fischer. Bull, de la Soc. Imp. des Nat. 

 de Moscow, xxiv 412, t. ix. figs. 1-11 (1851). — Cragin. Trans. 

 Kansas Acad. Science (1883). — Herrick. Final Report, 145 

 (1884). 



C. iw^f /IS Herrick. 10th Rep. Geol. Minn. 228 (1882); 

 Amer. Nat. xvii, 499 (1883). 



ifrtb.— Massachusetts (Cragin), Alabama and Minnesota (Herrick). 



FAMILY HARPACTID^. 

 I. Canthooamptus Westw. 



1. C. CAVERN ARUM Packard. Zoology, 298 (figure only). 

 Hab. — Kentucky (Packard). 



2. C. iLLiNOiSENSis Forbcs. Bull. 111. St. Lab. Nat. Hist., 

 No. 1, 14 {181Q).— Herrick. Final Report, 170 (1884). 



Ifa6.— Illinois (Forbes). 



3. C. MiNUTUS Baird. British Entomostraca, 204, tab. 

 XXV, figs. 4-8, XXX, fig. 3 (ISbO).— Herrick. Final Report, 170 

 (1884). 



C. minutus, var. occidentalis Herrick. 7th Rep. Geol, 

 Minn. 95 (1879). 



Hab. — Minnesota (^Herrick). 



4. C. MiNNESOTENSis Herrick. Final Report, 173 (1884). 

 jHa6.— Minnesota (Herrick). 



5. C. NORTHLTMBRicus Brady, var. americanus, Herrick. 

 Final Report, 170 (1884;. 



Hab. — Minnesota (Herrick). 



