458 



bulletin: museum of comparative zoology. 



Epilobocera armata Smith. 



Epilobocera armata Smith, Trans. Conn. acad. arts & sci., 1870, 2, 

 p. 151, pi. 5, fig. 2. 



Near Guaos, Jurisdiction de Cienfuegos; young specimens. M. C. 

 Z., 7,414. 



Not previously recorded from western Cuba. 



ASTACIDAE. 



By Walter Faxon. 



Cambarus cubensis Erichson. 



Astacus (Cambarus) cubensis Erichs., Arch. f. naturgesch., 1846, 12, 

 1, p. 100. 



Eight specimens (3 cT , 5 9), M. C. Z., 7,407, were collected by 

 Dr. Barbour in the Botanic Garden of the Institute, Principe, Habana. 



Cambarus cubensis consobrinus (Saussure). 



Cambarus consobrinus Sauss., Rev. et mag. de zool., 1857, ser. 2, 

 9, p. 101. Mem. Soc. phys. hist. nat. Geneve, 1858, 14, p. 457, pi. 3, 

 fig. 21. 



Nine specimens (5 cf, 4 9 ), M. C. Z., 7,343, were secured by Dr. 

 Barbour at San Antonio de los Bafios, in the interior of the Province 

 of Habana. They were got from boys who were using them for fish- 

 bait. These specimens differ from the true C. cubensis Erichs. in 

 the following regards : — the rostrum is narrower, more deeply con- 

 cave above; its margins more elevated and less convergent between 

 the base and the pair of lateral spines near the distal end; these lateral 

 spines, moreover, are much better developed than they are in C. 

 cubensis, and the rostral acumen is longer; the post-orbital ridge is 

 more prominent, distinctly grooved along its outer face, and termi- 

 nates anteriorly in an acute spine much more strongly emphasized than 

 in the typical C. cubensis; there is, too, an evident lateral spine on 

 each side of the carapace, on the hind border of the cervical groove, — 

 a spine which is not present in typical specimens of C. cubensis. 

 The external sexual organs are alike in the typical form and the form 

 consobrinus. 



