OF AKTS AND SCIENCES. 147 



? Astacus {Cambarus) affinis, Erichson, op. cit., p. 9G. 184G. 



Camburus crffinis, Giraixl, op. cit., p. 87. 1852. 



Cambarus Pealel, Girard, op. cit., p. 87. 1852. 



Camburus crffinis, Hageii, op. cit., p. CO, PI. I. figs. 19-22, 81, 

 85, PI. III. fig. 152, Pi. V. 1870. 



Cambarus affuiis, Abbott, op. cit., p. SO. 1873 (habits). 



Hub. , New York, New Jersey, Pennsylvania, Maryland, Dis- 

 trict of Columbia, Virginia, Lake Erie, Lake Sujjorior. 



Erichson's type, a female, from South Carolina, near Green- 

 ville (Dr. Cabanis), is [)erhaps the closely allied C. sj)inotms 

 Bundy. I have seen types of G. Penlti Girard in the Smithsonian 

 Institution. They are large G. affinis, as Ilagen suspected. 

 41. Cambarus Sloanii. 



Cambarus Sloanii, Bundy, Bull. 111. Mus. Nat. Hist., No. I. 

 p. 24. 1876. — Proc. Acad. Nat. Sci. Phila., 1877, p. 172. 

 Hab. Indiana, Kentucky. 



45. Cambarus proimnquus. 



Cambarus propinqnus, Girard, op. cit., p. 88. 1852. 



Cambarus propinquus, Hagen, op. cit., p. 67, PI. I. figs. 31- 

 38, PI. in. fig. 153. 1870. 



Hab. Toronto, Pi-ovince of Ontario ; Montreal, Province of 

 Quebec ; New York, Indiana, Illinois, Michigan, Lake Superior, 

 Wisconsin, Iowa. 



46. Cambarus Saxborxii. 



Cambarus Sanbornii, Faxon, supra, p. 128. 



Hab. Smoky Creek, Carter Co., Kentucky ; Oberliu, Ohio. 



47. Cambarus IIarrisonii. 



Cambarus IIarrisonii, Faxon, supra, p. 130. 

 Tlab. Irondale, Missouri. 



48. Ca:mbarus viriuis. 



Cambarus virilis, Hagen, op. cit., p. G3, Tl. I. figs. 23-28, 

 PI. H. figs. 128-132, PI. III. fig. 155, PI. VIIL 1870. 



Cambarus debilis, Bundy, Bull. 111. j\Ius. Nat. Hist., No. I. p. 

 24. 1876. — Trans. Wis. Acad. Sci., V. 181. 1882. — Geol. 

 Wis., Surv. 1873-1879, L 403. 1883 (male, form II.). 



Cambarus Couesi, Streets, Bull. U. S. Geolog. Geograph. 

 Surv. Terr., III. .S03. 1S77. 



Cambarus virili.'i, Herrick, op. cit., p. 253. 1882. 



Hab. Lake Winnipeg, Saskatchewan River, Red River of 

 the North, Toronto, and JMontreal (?), Dominion of Canada; Da- 



