68 



P. spinimanus. Edwards' description agrees well with 

 that of Saussure and also with his figure. 



100. Palsemon jamaicensis Olivier, Encyclopedic Methodique, 

 t. viii (teste Edw.). Edw., Hist. Nat. des Crust., 1837, ii, p. 398. 

 Saussure, 1. c., p. 49. Smith, Trans. Conn. Acad., 18G9, ii, p. 23; 2nd 

 and 3rd Report Peab. Acad. Sci., 1871, p. 97. 



West Indies, Gulf of Mexico, Brazil, west coast of 

 Nicaragua. (There is a specimen in the Museum of the 

 Peabody Academy at Salem, Mass., brought by the late 

 Prof. Orton from the junction of the Napo and Maranon 

 rivers.) 



101. Palsemon aztecus Saussure, 1. c., 1858, p. 50, pi. IV, f. 29. 

 Vera Cruz, Mexico. 



(Is this distinct from the last ?) 



102. Palsemon brachydactyTus Wiegmann, Archiv fur Natur- 

 geschichte, 1836, II, i, p. 148.- Macrobrachium americanum Spence 

 Bate, Proc. Zool. Soc., London, 1868, p. 363, pi. XXX. 



Fresh water of Mexico and Central America. 



103. Palsemon fluvialis Streets, 1. c., 1871, p. 227, pi. II, f. 5. 

 Isthmus of Tehuantepec. 



104. Palaemon montezumse Saussure, 1. c., p. 51, pi. IV, f. 28. 

 Vera Cruz, Mexico. 



105. Palsemon heterocheirus Weigmann, 1. c., 1836, p. 149. 

 Fresh water of western Mexico. 



SUBFAMILY Oplophorinse. 



GENUS OPLOPHORUS M. Edwards. 



(including Xiphocaris von Martens.) 



106. Oplophorus elongata Kingsley. Hippolyte elongata Guerin, 

 in Ramen de Sagra's Historia fisica, politica, y natural de la isla de 

 Caba, 1856, p. xx, pi. II, f. 16 (teste Martens). Oplophorus americanus 

 Saussure, 1. c., 1858, p. 56, pi. IV, f. 31, pi, V, f. 32. Xiphocaris elon- 



