604 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 38. 



Family PALffiMONIMJ. 



Genus BITHYNIS Philippi. 



BITHYNIS CiEMENTARIUS (Poeppig). 



Pdhi inon c;i iiu nldi-his PoEPPIG, Arch. I". Naturg., vol. 2, pt. 1, 



L836, p. 143. Chile. 



BITHYNIS CjEMENTARIUS GAUDICHAUDII (Milne Edwards). See page 560. 



Ecuador to Chile. 



Genus M ACROBRACHI UM Bate. 

 MACROBRACHIUM LAMARREI (Milne Edwards). 



Pdlemon lamarrei Milne Edwards, Hist. Nat. Crust., vol. 2, 

 1837, p. 397. — Palsemon amazonicus Heller, Sitzungsb. 

 Akad. Wiss. Wien, vol. 45, pt. 1, 1862. p. 418, pi. 2, fig. 45. 

 Darien; Ecuador; Peru; Paraguay; Brazil; Guiana. 



MACROBRACHIUM NATTERERI (Heller). 



Palsemon natt( n ri Heller, Sitzungsb. Akad. Wiss. Wien, vol. 15, 

 pt. 1, 1862, p. 414, pi. 2, figs. 36, 37. Ecuador; Guiana; 

 southern Brazil. 



MACROBRACHIUM MEXICANUM (Saussure). 



Palsemon mexicanus Saussure, Mem. Soc. Phys. Hist. Nat. 

 Geneve, vol. 14, 1858, p. 468 [52], pi. 4, fig. 27, 27a. Cuba; 

 Mexico: Isthmus of Panama. 



MACROBRACHIUM ACANTHURUS (Wiegmann). 



Palsemon acanthurus Wiegmann, Arch. I'. Naturg., vol. 2, pt. 1, 

 1836, p. 150. Panama; Ecuador; Texas to Rio Grande do 



Sul. Brazil; West Africa. 



MACROBRACHIUM APPUNI iEQUATORIALE (Ortmann). 



Palsemon appuni, var. seguatorialis Ortmann, Zool. Jahrb. 

 Syst., vol. •">, L891, p. 723, pi. 17. fig. 6. Ecuador. 



MACROBRACHIUM OLFERSII (Wiegmann). 



Palsemon olfersii Wiegmann, Arch. f. Naturg., vol. 2, pt. 1, 1836, 

 p. 150. — Palsemon spinimanus von Martens. Arch. f. 

 Naturg.. vol. :;:.. pt. 1, 1869, ]>. 26. pi. 2. fig. 3. La Paz, 

 Mexico, to Rio Sabana, Darien: West Indies to Rio de 

 Janeiro; West Africa. 



MACROBRACHIUM JAMAICENSE (Herbst). Seepage561 



Fresh waters "I' Pacific slope of America from Lower California 

 to Peru, and of Atlantic slope, from Texas to Brazil, includ- 

 ing West Indies. 



Genus PALSEMON Weber. 

 PALSEMON RITTERI Holmes. See page 561. 



San Diego. California, to Peru. 



