VO l889. n '] PROCEEDINGS OF THE NATIONAL MUSEUM. 621 



pair of legs, in the presence of a flattened tubercle on the basal segment 

 of the fourth pair of legs, in the shorter rnetacarapaee, broader areola, 

 long spiny telson, etc. The male appendages are similar to those of 

 C.fallax Hag., as are also the tubercles on the basal segment of the 

 fourth and fifth pairs of legs. More specimens of the three related 

 species G. alleni, G. evermanni, and G. wiegmanni are much needed in 

 order to elucidate the structure of the female and the two forms of the 

 male. 



Cambarus barbatus Fax. 



Aslacus penicillatus Le Conte, Proc. Acad. Nat. Sci., Phila., vn, 1855, p. 401,. 



(nee Olivier, 1791). 

 Cambarus penicillatus Hagen, 111. Cat. Mus. Comp. Zool., No. in, 1870, p. 53. 



Faxon, Proc. Amer. Acad. Arts and Sci., xx, 1384, p. 138. Id., Mem. Mus. 



Comp. Zool, x, No. 4, 1885, p. 36. 



Additional locality : Escambia River at Flomaton, above Pensacola, 

 Florida. D. S. Jordan, B. W. Evermann, and 0. H. Bollman (M. C. 

 Z.). One male, form I; five females, five young. The annulus ven- 

 tralis of the female is divided by a deep, longitudinal furrow into two 

 prominent tubercles, each of which is denticulate. The inner margin 

 of the hand is serrate, but not bearded as in the male. Length, 

 60 mm . After examining these undoubted specimens of Le Oonte's 

 Astacus penicillatus I am confident that the second-form males and the 

 females from Charleston, South Carolina, referred to this species by 

 Hagen (op. cit., p. 54; cf. Faxon, Mem. Mus. Comp. Zool., x, No. 4, p. 

 37) belong to some other species. 



Following the code of nomenclature adopted by the American Orni- 

 thologists' Union* (canon xxxin, p. 47), Le Conte's specific name peni- 

 cillatus must be rejected, since it had been used previously by Olivier 

 (Encyc. Meth., Hist. Nat. des Insectes, VI, 1791, p. 343), in combination 

 with the same generic name, for another animal (Palinurus penicillatus 

 of recent authors). 



Cambarus pellucidus (Tellk.). 



This species has been reported from the following caves in Indiana,, 

 besides the Wyandotte and Bradford Caves ; caves at Clifty, Bartholo- 

 mew County (Dr. John Sloan) ; Mayfield's Cave, near Bloomington, 

 Monroe County (C. H. Bollman ).t These caves are in the White River 

 drainage. For further remarks on G. pellucidus see below under 

 G. setosus. 



Cambarus simulans Fax. 



Additional locality : Tributary of Medicine River, Barber County r 

 Kansas. Messrs. Williams and Cragin (M. 0. Z.). 



* The Code of Nomenclature and Check- List of North American Birds adopted by the 

 American Ornithologists' Union; being the report of the committee of the union on 

 classification and nomenclature, New York, 1886. 



t Packard, Mem. Nat. Acad. Sci., Vol. ix, No. i, p. 16. 



