1-18 PROCEEDINGS OF THE AMERICAN ACADEMY 



kota, ]Minnesota, Wisconsin, Iowa, Nebraska, Wyoming, Kansas, 

 Missouri, Illinois, Indiana, Tennessee, Texas, New York? 



I liavc examined the types of all the authors cited in the above 

 synonymy. 



49. Camuauus kusticcs. 



Caniharus rusttcus^ Girard, op. ciL, p. 88. 1852. 



Cambcn-us 7-iislicus, Ilagen, op. cit., p. 71, PI. I. figs. 80-83, 

 PL III. fig. IGl. 1870. 



Camharus placidus, Ilagen, op. cit., p. 65, PI. I. figs. 76-79, 

 PI. III. fig. 158. 



Camhanis juvenilis, Hagen, op. cit., p. 66, PI. I. figs. 29-33, 

 PI. III. fig. 157. 



Camharus Wisconsinensis, Bundy, Bull. 111. Miis. Nat. Hist., 

 No. I. p. 4. 1876. — Trans. Wis. Acad. Sci., V. 181. 1882.— 

 Geol. Wis., Surv. 1873-1879, I. 402. 1883. 



Ilab. Pennsylvania, Ohio, Indiana, Illinois, Kentucky, Ten- 

 nessee, Lake Superior, Wisconsin, Iowa, Missouri, Texas. 



Among the large amount of material before me I find so many 

 specimens that combine characters belonging to Ilagen's three 

 species, O. rusticus, C. placidus, and C. Juvenilis, that I am led 

 to consider them all as varieties or forms of C rusticus. A 

 type, male, form II., of C Wisco7isinensis, from Racine, Wis., 

 received from Mr. Bundy, agrees pretty closely with the foim 

 C. placidus. 



50. Cambakus spinosus. 



Camharus spinosus, Bundy, Proc. Acad. Nat. Sci. Phila., 

 1877, p. 17;;. 



Ilab. Saluda River, South Carolina ; neighborhood of Rome, 

 Georgia; Tennessee River, near border of Georgia; Lauderdale 

 Co., Alabama. 



51. Ca:mbarus Putxami. 



Camharus Putuami, Faxon, supra, p. 131. 

 Hab. Kentucky, Teimessee, Indiana? 



52. Cambauus oiiscuiius. 



Camharus ohscurus, Ilagen, op. cit., p. 69, PI. I. figs. 72-75, 

 Pl. IIL fig. 154. 1870. 



Ilab. Genesee River, Rochester, New York. 



53. Cambarus FORCErs. 



Camharus forceps, Faxon, supra, p. 133. 



Ilal). Lauderdale Co., Alabama ; Knoxville, Tennessee? 



