68 



P. spinimanus. Edwards' description agrees well with 

 that of Saussure and also with his figure. 



100. Palsemon jamaicensis Olivier, EncyclopecUe Methodique, 

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

 Saussure, 1. c, p. 49. Smith, Trans. Conn. Acad., 1869, 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 brachydaetylus 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. Palsemon 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 31. Edwards. 



(including Xiphocaris von Martens.) 



106. Oplophorus elongata Kingslcy. 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. 5G } pi. IV, f. 31, pi. V, f. 32. Xiphocaris elon- 



