580 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.38. 



Subfamily TEICHODACTYLINil<;. 

 Genus TRICHODACTYLUS Latreille. 



TRICHODACTYLUS (TRICHODACTYLUS) FLUVIATILIS (Latreille). 



Trichodadylus Jluviatilis Latkeille, Encyc. Meth., Hist. Nat., 

 Ent., vol. 10, 1825, p. 705. — Trichodadylus (Trichodadylus) 

 Jluviatilis Rathbun, Nouv. Arch. Mus. Hist. Nat., Paris (4), 

 vol. 8, 1906, p. 35, pi. 15, fig. 11, text fig. 106. Fresh 

 waters of Chile, Brazil, and Guiana. 



TRICHODACTYLUS (VALDIVIA) MARGARITIFRONS (Ortmann). 



Dilocarcinus margaritij'rons Ortmann, Zool. Jahrb. Syst., 

 vol. 7, 1893, p. 492, pi. 17, fig. 11. Rio Ucayali, Peru; 

 British Guiana. 



TRICHODACTYLUS (VALDIVIA) PARDALINUS (Gerstaecker). 



Dilocarcinus pardalinus Gerstaecker, Arch. f. Naturg., vol. 22, 

 pt. 1, 1856, p. 148. Upper Amazon (?); Paraguay. 



TRICHODACTYLUS (VALDIVIA) LATIDENS (A. Milne Edwards). 



Sylviocarcinus latidens A. Milne Edwards, Ann. Soc. Ent. 

 France (4), vol. 9, 1869, p. 175. — Trichodadylus (\'aldiri<i) 

 latidens Rathbun, Nouv. Arch. Mus. Hist. Nat., Paris (4), 

 vol. 8, 1906, p. 49, pi. 17, fig. 4, text fig. 112. Upper 

 Amazon. 



TRICHODACTYLUS (VALDIVIA) PERUVIANUS (A. Milne Edwards). 



Sylriocarcinus peruvianus A. Milne Edwards, Ann. Soc. Ent. 

 France (4), vol. 9, 1869, p. 174. — Trichodadylus (Valdivia) 

 l>( rur'iainis Rathbun, Nouv. Arch. Mus. Hist. Nat., Paris (4), 

 vol. 8, 1906, p. 50, pi. 17, fig. 1. Guyallaga, Peru; upper 

 Amazon, Brazil. 



TRICHODACTYLUS (DILOCARCINUS) ORBICULARIS (Meuschen). 



( ancer orbicularis Meuschen, Index Zoophylacii Gronoviani, 

 fasc. 3, 1781. — Trichodadylus (Dilocarcinus) orbicularis 

 Rathbun, Nouv. Arch. Mus. Hist. Nat., Paris (4), vol. 8, 

 L906, |». 58, pi. 18, figs. 3, 8, text fig. 119. Brazil; Para- 

 guay; North Argentina: Bolivia (?). 



TRICHODACTYLUS (DILOCARCINUS) PICTUS (Milne Edwards). 



Dilocarcinus pictus Milne Edwards, Ann. Sci. Nat. (3), Zool., 

 vol. 20. L853, p. 216 [182]; Arch. Mus. IIi>t. Nat., Paris, 

 vol. 7, L854, p. 181, pi. 11, ligs. 2-2d. Amazon at Nauta, 

 Peru; Colombia; Guiana; Brazil: Paraguay; Argentina. 



TRICHODACTYLUS (DILOCARCINUS) EMARGINATUS (Milne Edwards). 



Dilocarcinus emarginatus Milne Edwards, Ann. Sci. Nat. (3), 



Zo.,1., vol. '_'(), is;,;;, ,,. 216 [182]; Arch. Mus. Hist. Nat.. 



Tans, vol. 7, 1854, p. L81, pi. 14, fig. 4. Rio Ucayali, 

 Peru ; Colombia. 



