142 PROCEEDINGS OP THE AMERICAN ACADEMY 



Mirador, Mexico. G. Aztecus Saussure has (according to the 

 description) a shorter, flatter hand, and carpus spinous on inter- 

 nal border. Von Martens (Arch. Naturgesch., XXXVIII. 131) 

 4 would separate it from G. Mexicanus. Dr. Hagen has kindly 

 given me the following note on the types of Saussure in the Ber- 

 lin Museum : " The first form of the male, and the female, from 

 Mexico, seem to be G. Mexicanus Erichs., with nearly cylindri- 

 cal hands. The second form, with more flattened hands, belongs 

 alone, then, to Saussure's C. Aztecus. In the second form the 

 antennal scale is more broadly truncate in front, and the rostrum 

 is a little different, but the differences are not striking enough to 

 preclude the identity." Erichson's types of G. Mexicanus were 

 not found. Saussure's locality for G. Aztecus is near Tomatlan 

 "dans les Terres-Chaudes." According to Von Martens there 

 are specimens in the Berlin Museum from Puebla. 



21. Cambarus Cubensis. 



Astacus (Gambarus) Gubensis, Erichson, op. cit., p. 100. 1846. 



? Cambarus consobrinus, Saussure, Rev. et Mag. de Zool., 

 2 e Ser., IX. 101. 1857. — Mem. Soc. Phys. Hist. Nat. Geneve, 

 XIV. 457, PI. III. fig. 21. 1858. 



Gambarus Cubensis, Hagen, op. cit., p. 85. 1870 (after Erich- 

 son). 



Cambarus Cubensis, Von Martens, Arch. Naturgeschichte, 

 XXXVIII. 129. 1872. 



Hab. Cuba. 



Erichson's and Saussure's types are in the Berlin Museum, and 

 have been examined by Hagen and Von Martens. Saussure's 

 G. consobrinus are two dry female specimens. They differ in 

 some unimportant regards from Erichson's G. Cubensis, and, as 

 the male appendages of Saussure's species are not described, the 

 identity of the two species is somewhat doubtful. According to 

 Von Martens, specimens in the Berlin Museum indicate the pres- 

 ence of two species in Cuba. The examples of C. Cubensis in 

 the Museum of Comparative Zoology were taken by Mr. Samuel 

 Garman from creeks near Havana. 



22. Cambarus Bartonii. 



? Astacus Bartonii, Fabricius, Suppl. Entomolog. Syst., p. 407. 

 1798. 



? Astacus Bartonii, Bosc, Hist. Nat. Crust., II. 62, PI. XL 1802. 



Astacus ciliaris, Rafinesque, Amer. Monthly Mag., II. 42. 

 Nov., 1817. 



