EIGENMANN: the freshwater fishes of BRITISH GUIANA 499 



Cichlasoma insigne Pellegrin, "Cichlides," 185, in Mem. Soc. Zool. France, XVI, 



1903, 221 (Orinoco; Teffe; Manaos). 

 Chromys acara Castelnau, Anim. Am. Sud, Poiss., 1855, 17, pi. 9, fig. 1. 



One specimen, 52 mm. Cane Grove Corner. (C. M. Cat. No. 2358a.) 



Twelve specimens, 55-135 mm. Botanic Garden. (C. M. Cat. No. 2359a-/; 

 I. U. Cat. No. 12505.) 



Twenty-four specimens, 39-68 mm. Malali. (C. M. Cat. No. 2360a-c; I. U. 

 Cat. No. 12506.) 



Thirty-seven specimens, 27-147 mm. Lama Stop-Off. (C. M. Cat. No. 

 2361o-e; I. U. Cat. No. 12507.) 



Three specimens, 30-35 mm. Gluck Island. (C. M. Cat. No. 2489a-c.) 



Twelve specimens, 14-137 mm. Christianburg Canal. (C. M. Cat. No. 

 2362a-/; I. U. Cat. No. 12508.) 



Three specimens, 31-50 mm. Rockstone. (C. M. Cat. No. 2363a-&; I. U. 

 Cat. No. 12509.) 



Ten specimens, 26-83 mm. Maduni Creek. (C. M. Cat. No. 2364a-6; I. U. 

 Cat. No. 12510.) 



One specimen, 62 mm. Packeoo Falls. (C. M. Cat. No. 2365a.) 



Seven specimens, 19-82 mm. Konawaruk. (C. M. Cat. No. 2369a-d; I. U. 

 Cat. No. 12511.) 



One specimen, 65 mm. Crab Falls. (C. M. Cat. No. 2368a.) 



Six specimens, 50-95 mm. Twoca Pan. (C. M. Cat. No. 2366a-c; I. U. Cat. 

 No. 12512.) 



Eight specimens, 47-102 mm. Rupununi. (C. M. Cat. No. 2367a-d; I. U. 

 Cat. No. 12513.) 



Head 2.6-3; depth 2-2.75; D. XIV-XVI,10-12; A. VIII or IX,10 or 12; 

 lateral Une 17 + 10 or 11 |p|; scales 27-29 along the middle line. Eye 3 in the 

 head, .8 in the preorbital, 1.7 in the interorbital in the largest. 



Increasing in depth to the anal; deep behind, the length of the caudal peduncle 

 about 3 in its depth; pointed in front, the head abruptly contracted in front of the 

 breast; head broad above; snout rounded, anterior part of head bluntly conical; 

 mouth terminal, maxillary reaching about half-way to the eye; maxillary-pre- 

 maxillary border 3.75 in the head; five or six gill-rakers on the lower arch; lower 

 lip with a frenum. 



Cheeks with three or four series of scales; end of lateral line about four scales 

 removed from the dorsal ; bases of soft dorsal, anal, and caudal scaled. 



Pectorals much shorter than the head; ventrals with long streamers, sometimes 



