ART. 20 NEW AND IMPERFECTLY KNOWN FISHES — GINSBURG 23 



Measurements. — Total length, 82.5. Standard length, 67. Great- 

 est depth (abdomen pressed to approximately normal position), 12.5 

 (18.7); depth of caudal peduncle, 6.8 (10.2); length of head, 17.2 

 (25.7); maxillary, 8.1 (12.1); snout, 6.4 (9.6); eye, 4.6 (6.9); 

 interorbital, bony part, 1.2 (1.8); postorbital part of head, 9 (13.4) ; 

 antedorsal distance, 23 (34.3); caudal, 16 (23.9); ventral, 15 (22.4) 

 distance ventral to anal origins, 21 (31.3); base of anal, 18 (26.9); 

 base of second dorsal, 19.5 (29.1). Some of the measurements given 

 in the original description remeasured and restated are as follows: 

 Depth, 6.6; head 4.8; caudal, 5.2 in total length; height of head 

 behind eye about equal to its width 1.7 in its length. 



Color. — The color is still fairly well preserved. The body is a 

 warm cocoa brown with light-colored longitudinal streaks following 

 regularly along the rows of scales, the streaks being made up of 

 light dots, one on each scale. The head is clouded with plumbeous. 

 The caudal is still faintly barred. The other fins are now nearly 

 uniformly brown. 



Type. — The type, described above, comes from the Amazon River 

 and bears U.S.N.M. No. 6091. 



U.S. GOVERNMENT PRINTING OFFICE: 1931 



