dr. Si 



140 PROCEEDINGS OF THE AMERICAN ACADEMY 



is published, one may well hesitate to admit the Carniola Cam- 

 barus into the list. 



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

 p. 3, 1876, Trans. Wis. Acad. Sci., V. 180, 1882, Geol. Wis., Surv. 

 1873-1879, I. 402, 1883, a species founded on mutilated speci- 

 mens (the fourth thoracic legs of the males being lost), is indeter- 

 minable. It is said to be " closely related to C. acutas, but may 

 be at once separated by the shorter hands, — similar to those of 

 O.propinquus, — and the non-tuberculated annulus of the female." 

 Shore of Lake Michigan, Racine, Wis. 



16. Cambarus simulans. 

 Cambarus simulans, Faxon, supra, p. 112. 

 Hab. Texas, Kansas. 



17. Cambarus advena. 

 Astacus advena, Le Conte, op. cit., p. 402. 1855. 

 Cambarus Carolinus, Hagen, op. cit., p. 87, PI. I. figs. 51-54, 



PI. III. fig. 165. 1870. 



Cambarus advena, Hagen, op. cit., PI. III. fig. 164, PI. VII. 

 1870. 



■ / The descriptions of C. advena and C. Carolinus in Hagen's 

 monograph are accidentally transposed, so that they do not agree 

 with Hagen's types in the Museum of Comparative Zoology. 

 A full figure of Le Conte's species is given as C. advena on Plate 

 VII.,* and the antennal scale, spine of the second segment of the 

 antenna, and epistoma (from Le Conte's type in the Philadelphia 

 Academy) on PI. III. fig. 1 64. The male appendages, antennal 

 scale, and epistoma are figured on, PI. I. figs. 51-54, PL III. fig. 

 165, as C. Carolinus. 



18. Cambarus Carolinus. 

 ? Astacus ( Cambarus) Carolinus, Erichson, op. cit., p. 96. 1846. 

 Cambarus advena, Hagen, op. cit., p. 86, PL I. figs. 90-92. 



1870. 



Cambarus Carolinus, Hagen (as determined by examination of 

 his type specimen !). 



Hab. South Carolina. 



For the transposition of the descriptions and part of the fig- 

 ures of C. advena and C. Carolinus in Hagen's Monograph, see 

 above. Hagen's type of C. Carolinus, labelled, " Cambarus Caro- 



* This figure represents a female (M. C. Z., No. 282), not male, as stated on 

 the plate and in the text. 



V 



