REVIEW OF THE ERYTIIRININ.E. 107 



locality have the dorsal aud anal spotted, and a dark spot 

 at the base of each scale, and another has the dark lateral 

 band. Two specimens, .09 m., from Goyaz, have the 

 bands of the head and opercular spot quite marked, and 

 the sides with more or less interrupted vertical streaks. In 

 tliese specimens no pterygoid teeth could be detected — a 

 condition which may be explained by their age. 



In the young the pterygoid teeth are minute and in seem- 

 ingly but a single series, or entirely wanting: in the old the 

 patches are almost as wide as the palatine patches, and 

 contiguous. The young of this species can be readily dis- 

 tinguished from that ot salmoneus by the color. 



2. Erythrinus salvus. 



Erythrinus salvus Agassiz '29, 41 (Sau Fraucisco); M. & T. '48a, 632 



(Forest Streams and Pouds). 

 Erythrinus gronovii C. & V. xix, '46, 500 (Cayenne); Gthr. '64, 284 



(copied); Peters. '77a, 472 (Calobozo). 

 Habitat: San Francisco; Guiana; Orinoco. 



The species salvus and gronovii both differ from unitceni- 

 atus in the color of the caudal. The first was based on a 

 specimen taken from the stomach of Macrodon. The differ- 

 ence in the localities seems to be the chief reason for separ- 

 ating the species. 



3. Erythrinus erythrinus. 



Cyj)rinus cylhidricus L. Mas. Ad. Fred. 77, pi. 30, 1754. 



Cyprinus cephalush. 1758, 322; 1766, 527 (in part). 



Erythrhius Gvonow. 1754, ii. 6, No. 154, pi. 7, tig 6 & 1763, 114. 



Synodiis erythrinus Block & Sclin. 1801, 397. 



Erythrinus salmoneus Gronow '54a, 170 (^Surinam); Gthr. '64, 284 

 (Surinam; Kio Cupai;; Steiud, '76b, ,39 (Gurupa; Santarem; Taba- 

 tinga; Cudajas; Uerauduba; Tajapuru; Lago Alexo; Manacapuru); 

 Cope '78a, 694 (Peruvian Amazou). 



Erythrinus brevicauda Gthr. '64, 2^5 (hab.?); Cope, '78a, 698 (Peru- 

 vian Amazon;. 



Habitat: Rio Janeiro to Surinam and Peru. 



Dr. Steindachner gives a good description of this species 

 and identifies both the longipinnis and brevicauda with it. 



