44 FISHES FROM BRAZIL 



d A well-developed membrane connecting anterior part of branchi- 

 ostegal membranes; posterior half of maxillary gently and evenly 

 curved downward ; maxillary reaching past eye in specimens over 

 7 inches long; depth 3}i to Sys. salicns. 



dd No membrane between branchiostegal membranes* ; maxillary 

 straight to its posterior fourth, then rather abruptly curved down- 

 ward; maxillary not reaching past eye; depth 3^ to 3^. 



sauriis. 



136. Caranx hippos (Linnseus). 



Several specimens were taken at Para. 



137. Caranx crysos (Mitchill). 

 A single specimen was collected at Natal. 



138. Hemicaranx amblyrhynchus (Cuvier and Valenciennes). 



A single specimen, 8 inches in length, was taken at Para. There can be 

 little doubt but that this is referable to the above species, but there are several 

 discrepancies between it and the description published by Jordan and Ever- 

 mann (Fishes of N. and Mid. Am., p. 912). The head is 3^ in length. 

 Fifty scutes may be counted if the extremely small ones are included at each 

 end of the straight part of the lateral line. The maxillary reaches a little 

 past the front of the pupil (not "the front of the orbit") ; the caudal lobes 

 are equal. The arch of the lateral line is contained 2^^ times in the straight 

 portion (not 3 times). The pectoral is considerably longer than the head 

 and reaches well past the front of the anal. In all of these respects the 

 specimen at hand resembles the plate by Cuvier and Valenciennes. 



Family APOGONICHTHYID^. 



139. Amia 'brasiliana (Gilbert). 



A few specimens taken in the tide pools at Natal, from 1 to Z]/^ inches 

 in length. They agree perfectly with the description of the type. They 

 lack the caudal spot of Amia imberbis, but in the smallest ones there is a 

 dusky, wide, transverse band across the caudal peduncle, though this does 

 not resemble the spot in the middle of the peduncle of A. dovii. They all 

 have the opercular spot, and the small ones have a black spot in line with it 

 behind the eye. 



* Occasionally a very slight narrow membrane is present, but nearly always 

 it is entirely absent, and it is never well developed as in O. saliens. 



