Haseman : Expedition to Central South America. 363 



one-fourth times as long as deep; snout 2; eye 4; alternating light and 



dark bands on caudal tin; the other fins spotless. 



No. 2819, 12 cm., Alcobaca, Rio Tocantins, Jan. 10, i<)io. 



The dorsal tin has eighteen spines, and is scaly at its base. 

 No. 2820a-c. 2.5 to 12.2 cm., Santarem, Dec. 12, 1909. 



Vertical fins spotted, one with eighteen dorsal spines; the pro- 

 longed white ventral rays reach almost to base of caudal. 

 No. 2821, 16 cm., Sao Antonio de Guapore, Rio Guapore, July 23, 



1909. 

 67. Geophagus brasiliensis Quoy & Gaimard. 

 No. 2768, 12 cm., Entre Rios, Rio Parahyba, June 10, 1908. 

 No. 2769a-/, 3.3 to 10.5 cm., Cachoeira, Bahia, Rio Paraguassii, 



April 14, 1908. 



D. XV' or X\'I, 12; depth 2.33 to 2.5; caudal peduncle not quite 

 as long as deep. 



No. 277OC-A, 3.2 to 9.3 cm., Entre Rios, Rio Parahyba, June i, 1908. 

 No. 2771, 9.9 cm., Campos, Rio Paraguay, June 15, 1908. 

 No. 2j~2a-e, 7-10 cm., Raiz de Serra near Santos, July 26, 1908. 



Caudal peduncle longer than deep; depth 2.5. 

 No. 2773a-c, 1 1.2 to 12.7 cm., Porto Alegre, Rio Grande do Sul, 



Jan. 20, 1909. 



These specimens are slightly deeper; the snout is shorter; D. XV, 

 II ; the caudal peduncle is not as long as deep, in contrast to the Entre 

 Rios specimens. They appear to be transitional between G. brasil- 

 iensis and G. brachyurus. 



No. 2774a-c, 2.7 to 11.5 cm., Entre Rios, Rio Parahyba, June 2, 1908. 

 No. 2775a-//, 2.3 to 8.7 cm., Campos, Rio Parahyba, June 14, 



1908. 



D. XI\', 12; caudal peduncle three-fourths as long as deep; pectorals 

 extending slightly beyond the origin of the anals; depth 2.25; head 

 2.75; eye 3.5 in the head. 

 No. 2~y6a-b, 10 and 1 1 cm., Porto Alegre, Rio Grande do Sul, Jan. 22, 



1909. 

 No. 2~j~a-e, 6.8 to 9.3 cm., Raiz da Serra, Rio Mogy near Santos, 



July 27 and 28, 1908. 



These specimens are more slender than examples having the same 

 length taken in lagoons and slowly flowing water. 

 No. 27780-5, 2.5 to 8.2 cm., Muniz Freire, Espirito Santo, Rio Ita- 



pemerim, June 9 and 18, 1908. 



