22 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxm. 



No. 34590. Locality probably Para, Brazil, presented by J. C. 

 Brevoort. 



a 52 mm. to base of caudal. Depth 2.06; A. 28; eye 2.75, maxillary 

 nearly equals eye; interorbital 3; a faint humeral spot; scales 6-38-T 

 (5 above ventral). 



1) 70 mm. to base of caudal. Depth 2|; A. 30; scales 0-37-6. 



c 57 mm. to base of caudal. Depth 2f; A. 21); scales 6-39-6. 



No. 34589 (part). Para, Brazil, presented l)v J. C. Brevoort. Three 

 specimens, A. 28, 29, and 29. 



No. 8225. Napo or Maranon, Brazil, Orton collection. This speci- 

 men is 108 mm. long- and is probably the Astyaiia.e cdrollme of Gill. 

 The only serious discrepancy seems to be in the leng'th of the maxil- 

 lary, which Gill says extends to the end of the first suborbital l)elow 

 the vertical from the anterior margin of the pupil. 



Length to base of caudal, 85 nun.; depth 32 mm.; head from tip of 

 snout to end of opercle 22 mm.; eye ^^\\ interorbital 8; A. 26; scales 

 6-36-5; maxillary reaching ])eyond origin of eye, not to end of first 

 suborbital; no teeth on maxilUuy. Caudal spot continued to end of 

 middle rays; humeral spot faint. 



No. 1659 (part). Eight specimens, 112-141 mm. long, Truando, 

 Colombia, Michler and Schott collection. 



These specimens are in all essential characters ^1. ratUus. 



They average larger than specimens from other localities. 



a A. 27, D. 10; scales 0-38-5^. 



I A. 27, D. 11; scales 0-38-6. 



c A. 28, D. 11; scales 0-38-5^. 



d A. 20, D. 11; scales 6-38-5. 



e A. 31, D. 12; scales 6-38-5. 



/ A. 27, D. 11; scales 6-37-5i. 



g A. 28, D. 10; scales 6-38-5. 



h A. 29, D. 11; scales 6-37-5. 



The depth ranges from 2f-2|; head 4-4^; eye 3; maxillary a1)out 

 equal to the eye; interorbital 2^-3. 



No. 32515. Two specimens, Truando (^), Colombia, A. Schott. A. 

 29-30; scales 6-37-7; 7-37-6. Averag-e number of anal rays of all 

 the Truando specimens 28.3. 



No. 19904. Two specimens, 115 and 120 mm. to base of caudal. 

 West coast of Central America. A. 29; scales 7-37-6 to ventrals. 



No. 19906. Twenty-three specimens. Central America. A. 28-32. 



No. 19913. Central America. 

 Astyanax rutilus cerstedii Liitken. 



Two series of si)ecimens from Nicaragua represent Liitken's 

 species. They are intermediate between typical rKtilus and semens^ 

 and could without violence be placed either with rutilus or with 

 seiieus. 



