N0.1556. LIST OF CHARACiN FISHES— EIGENMANN AND OGLE. 23 



The}" are as follows: 



No. oTSiiS. Nicaragua, Central America, Branst'ord collection. 



Beginning- with the largest of the 11 specimens under this number, 

 we have the following: 



a A. 29; scales T-3S-(i; a humeral spot, a band-like caudal spot; 

 depth 2|. 



h A. 31; scales 8-3T-T; a huiueral spot, a band-like caudal spot; 

 depth 2|. 



G A. 32; scales 7-?-?; a humeral 'spot, a ))and-like caudal spot; 

 depth 2|. 



d A. 30; scales 7-38-T; a humeral spot, a band-like caudal spot; 

 depth 2|. 



The anal ra\"s in detail are one with 27, five witii 21>, two with 30, 

 one with 31, two with 32; average 2i>.7. JVIaxillary usiudly with 2 

 teeth, sometimes but one. 



No. 39918. Nicaragua, presented by L. F. II. Birt:! Eight 

 specimens. 



A humeral and a caudal spot, the latter distinct and band-like; scales 

 lost at origin of lateral line, and the coiuit, therefore, uncertain. 



A. 30; scales 7-34-6; depth 2f. 



A. 28; scales 7-35-0; depth 2|. 



A. 28; scales 7-37-6; depth 3. 



The anal ra3"s are, one with 27, three with 29, two with 30, two with 

 31; average, 29.5. Maxillar}" alwa3^s with 2 teeth. 



Astyanax rutilus nicaraguensis Eigenmann and Ogle, new subspecies. 



Type— Cut. No. 55653, U.S.N.M. From Nicaragua, Biansford 

 collection. 



Cotypes. — Several specimens from the same source. 



Maxillar}' slender, having 2-7 teeth, in the latter case the teeth 

 extending along more than half the length of the bone. Of 35 speci- 

 mens, there are 9 with 2 teeth, 2 with 3 teeth, 5 with 4 teeth, 5 with 

 5 teeth, 5 with 6 teeth, 5 with 7 teeth, 3 with 8 teeth, and one with 9 

 teeth on the maxillary. 



Three have 27 anal rays, twelve have 28, eight have 29, ten have 30, 

 three have 32; average 29. 



It is possible that the specimens with numerous maxillary teeth are 

 all males. 



In general characters the specimens agree with the specimens iden- 

 titied as a>rstedii., and those with but two maxillary teeth are indistin- 

 guishable from them. The fact that such a large per cent, of specimens 

 have a large number of maxillary teeth entitles them to a separate 

 name. 

 Astyanax rutilus, variety? 



No. 43597. Two specimens. Mexico, presented by A. Duges.» 



A. 28; scales 8-37-5; depth 3. 



