316 PROCEEDINGS OF THE NATIONAL MVSEUM. vouxxii. 



BITHYNIS OLFERSII (Wiegmann). 



Palwmon olfersH Wiegmann, Arch. f. Nat., II, Pt. 1, 1836, p. 150. 

 Palwmon spinimanus Milne-Edwards, Hist. Nat. Crust., II, 1837, p. 399. 



Range. — Antilles; Brazil; Gulf of Dolce, Costa Eica; La Paz, Lower 

 California; Cape St. Lucas; West Africa. 



West African localities. — Etome, Karaeruu, in streams (Aurivillius); 

 Eio Papagaio, Princes Island (Osorio); St. Thomas Island (Greeff, 

 Osorio); Eolas (Greeff). 



Genus PAL^^MONETES Heller. 



PAL^MONETES TRISPINOSUS Aurivillius. 



Palcemoneles trispinosus Aurivillius, K. Sv. Vet.-Akad. Handl., XXIV, 1898, 

 p. 29, pi. IV, figs. 1, 2. 



West African locality. — Kitta, Kamerun, in a brook (Aurivillius). 



