GEOGRAPHICAL DISTRIBUTION. 171 



C. prjiiiii/nif$. Davenport; Ottumwa. 



C. immunis. West Liberty. 



C. ririlix. Davenport; Burlington; Fort Dodge ; Spring Vale; Des Moines Eiver; 



1 Jed ford. 



C. rusticus. Lizard Creek, Fort Dodge. 

 The State has been little explored. All of the above-named localities are on the 



eastern border of the State, except Fort Dodge and Spring Vale, which are in 



the central part. 



32. MISSOURI. Seven species : C. Blandingii, var. acuta, C. Diogenes, medius, immunis, 



Harrisonii, virilis, and rusticus. Possibly C. Bartonii in the Osage Paver. 



(See page 61.) 



C. Blandingii, var. acuta, occurs at St. Louis. 

 C. Diogenes. Carroll Co. and St. Louis. 

 C. medius. Iroudale, Washington Co. 

 C. immunis. St. Louis. 

 C. Harrisonii. Irondale, Washington Co. 

 C. virilis. St. Louis ; Osage Eiver ; Irondale. 

 C. rusticus. Osage Eiver. 



33. ARKANSAS. Four species : C. Diogenes, virilis, rusticus, and one undetermined spe- 



cies belonging to the C. Blandingii group. 

 C. Diogenes. Locality unknown. 

 C. virilis. White Eiver, Eureka Springs. 

 C. rusticus. White Eiver, Eureka Springs, 

 fy. iiuli't. Salina Eiver, Arkadelphia. 



34. INDIAN TERRITORY. None. 



35. KANSAS. Four species : C. simulans, Diogenes, immunis, and virilis. 



C. simulans. Fort Hays. 

 C. Diogenes. Leavenworth. 

 C. immunis. Leavenworth ; Ellis. 



C. virilis. Leavenworth; Manhattan; Eepublican Eiver northwest of Fort Eiley ; 

 Ellis. 



36. NEBRASKA. One species, C. virilis, from Omaha, on the eastern border of the 



State. 



37. DAKOTA TERRITORY. Three species : Cambarus Nebrascensis, C. virilis, and Astacus 



Gambclii. 

 C. Nebrascensis from Fort Pierre, at the confluence of the Bad and Missouri Elvers 



(Girard). 

 C. virilis from the Eed Eiver of the North, near Pembina, and from the Souris or 



Mouse Eiver. 

 A. Gambclii from the mouth of the Yellowstone Eiver, on the boundary between 



the Territories of Dakota and Montana (the easternmost locality for the genus 



Astacus). 



38. MONTANA TERRITORY. One species, Astacus Gambclii, from the mouth of the 



Yellowstone Eiver. 



39. WYOMING TERRITORY. Three species : C. Diogenes, immunis, and virilis. Perhaps 



also Astacus Gambelii. (See page 137.) 

 C. Diogenes has been found at Cheyenne. 

 C. immunis and C. virilis at Laramie City. 



