EIGKNMANN: THE FRESHWATER FISHES OF BRITISH GUIANA 417 



Three specimens 237-330 mm. Chipoo Creek, a branch of the Ireng. (C. M. 

 Cat. No. 2l87a-b; I. U. Cat. No. 12347.) 



Two specimens, 100 mm. Aruataima. (C. M. Cat. No. 2188; I. U. Cat. 

 No. 12348.) 



Nine specimens, 108-440 mm. Holmia. (C. M. Cat. No. 2189a-d; I. U. 

 Cat, No. 12349«-d.) 



Four specimens, 101-180 mm. Maduni Creek. (C. M. Cat. No. 2l90a-b; 

 I. U. Cat. No. 12352.) 



Sixteen specimens, 90-425 mm. Lama Stop-Off. (C. M. Cat. No. 2191a-c; 

 I. U. Cat. No. 12353.) 



Six specimens, 65-217 mm. Botanic Garden. (C. M. Cat. No. 2192a-c; 

 I. U. Cat. No. 12354.) 



Eighteen specimens, 119-400 mm. Georgetown trenches. (C. M. Cat. No. 

 2193a-d; I. U. Cat. No. 12355.) 



Three specimens, 102-165 mm. Nickaparu. (C. M. Cat. No. 2204a-6; I. U. 

 Cat. No. 12356.) 



Five specimens, 80-155 mm. Kumaka. (C. M. Cat. No. 2195a-c; I. U. 

 Cat. No. 12357.) 



One specimen, 280 mm. Wismar. (C. M. Cat. No. 2203a.) 



One specimen, 135 mm. Below Wismar. (C. M. Cat. No. 2196.) 



Two specimens, 251-265 mm. Mora Passage. (C. M. Cat. No. 2197a; I. U. 

 Cat. No. 12358.) 



Eighteen specimens, 110-295 mm. Arirka River. (C. M. Cat. No. 2198a-d; 

 I. U. Cat. No. 12359.) 



Four specimens, 57-120 mm. Savannah Landing. (C. M. Cat. No. 2199 

 a-b; I. U. Cat. No. 12350.) 



One specimen, 170 mm. Waratuk. (C. M. Cat. No. 2200.) 



Twelve specimens, 42-254 mm. Amatuk. (C. M. Cat. No. 2201a-c; I. U. 

 Cat. No. 12351.) 



One specimen, 113 mm. Creek below Potaro Landing. (C. M. Cat. No. 

 2202.) 



Head 3-3.4; depth 4.3; D. 14, rarely 15 or 13; A. 10-11; lateral line 38 

 or 39 in lower Potaro specimens, usually 41 or 42 elsewhere. 64 



Eye 7 in the head in specimens 200 mm. and larger, 5-6 in specimens 100- 

 200 mm., 68 4.3-5 in specimens 50-100 mm., 2.4 in the interorbital in specimens 



64 Of those examined five have 40, fourteen have 41, seventeen have 42, six have 43, and two have 44. 

 66 4.5 in the specimens from Crab Falls. 



