Haseman : Expedition to Central South America. 837 



No. 2570, ,^ cm., Sao .Xiitonio dc ( "iiiaport!-, .\ui;. II, l<)o(). 



No dorsal spot. 

 No. 2571, 2 cm., Posada, Campos dc MaLto Cirosso, June; 21. 1909. 



No dorsal spot. 

 No. 2572a-r/. 2.7 to 3.5 cm., San Joaciiiin, Bolivia, Sei)t. 4, i<;o9. 



Scales 2.-^ to 3-23-S or 9; gill-rakers five or six; depth 2; D. X\' to 

 XI\', 7; A. Ill, 7. These specimens are slightly deeper and ha\o no 

 spot on the dorsal spine, but in these characters there are complete 

 series of intergradations between the extremes or end variations. 

 Some have slightly scaly soft dorsals, and this varies with size. Cope's 

 figure and description of A. fiavilabrus is exactly like my specimens 

 from San Joaquin, excepting that it has one more dorsal spine. A. 

 Jrenifera is said to have more scales in the lateral line, but inasmuch 

 as my specimens vary from twenty-two to twenty-six, it is also 

 within the limits of the variation of .1. dorsi^cra. A. thayeri is said 

 to have a scaly dorsal, but some of m}* small ones are also slightly 

 scaly. In other details all of the species are identical and I do not 

 hesitate in considering them as synonyms of A. dorsigera. I found 

 only one of Cope's many specimens to belong to this species. The 

 remainder arc Cichlasoma bimaculatiim. 

 20. A. paraguayensis Eigenmann and Kennedy. 

 No. 2526, 5 cm., Cami)os Alegre, Rio Jauru, June 2, 1909. 

 No. 2=)2~a~d, 7 and 8 cm., Sapucay, Paraguay, April 2 and 5, 1909. 

 No. 25280-^, Bastos, June 29, 1909. 

 No. 26290-6, 3.5 to 6 cm., Arequa, Paraguay, Lake Ijiacary, April 18, 



1909. 

 No. 2530, 5 cm., Soa Francisco, Bolivia (Paraguay basin), June 10, 



1909. 

 No. 253ifl-g, 2 to 5 cm., \'illa Hays, Paraguay, April 11 and 13, 1909. 

 No. 25320-&, 4 to 4.5 cm., Asuncion, Paraguay, March 28, 1909. 

 No. 25330-^, 1.5 to 3 cm., Corumba, Rio Paraguay, April 27, 1909. 

 No. 25340-;^, 1-3 cm., Puerto Suarez, Bolivia, May 6 and 7, 1909. 

 No. 25350-^, Posada, in Camjios de Matto Grosso, June 29, '1909, 

 No. 2536, 4.3 cm., Sao Luiz de Caceres, Rio Paraguay, May 26, 1909. 

 No. 2537, 4 cm.. Santa Rita, Rio Santa Rita, June 12, 1909. 

 No. 25380-6, 5 and 7 cm., San Joaquin, Bolivia, Sept. 5, 1909. 

 No. 2539a-w, 3 to 7 cm., Sao Luiz de Caceres, Rio Paraguay, May 24, 



1909. 

 No. 999, 3 cm., Puerto Suarez, Bolivia (Steinbach Coll.). 



