136 MEMOIRS OF THE CARNEGIE MUSEUM. 



Brachyrhamphichthys mulleri Eigenmann and Eigenmann, Proc. U. S. Nat. 



Mus., XIV, 1891, 62. 

 Hypopo7mis artedi Eigenmann and Ward, Proc. Wash. Acad. 8ci., VII, 170, 1905 



(French Guiana); Eigenmann, Repts. Princeton Univ. Exp. Patagonia, 



III, 449, 1910 (French Guiana). 



3171 C. M., one, 150 mm. Iguape, Rio Ribeira, Dec. 15, 1908, Hascman. 



3172 C. M., fourteen, 50 to 160 mm. Maciel, Rio Guapore, July 29, 1909, 

 Haseman. 



3173 C. M., thirtj'-three, 85-265 mm. Campos, June 14, 1908, Haseman. 



3174 C. M., one, 180 mm. Uruguayana, Feb. 7, 1909, Haseman. 



3175 C. M., four, 130-180 mm. Lagoa Feia, Tocas, June 27, 1908, Haseman. 



3176 C. M., three. 70-110 mm. Bragan^a, Dec. 19, 1909, Haseman. 



3177 C. M., two, 55-140 mm. Rio Jauru, June 2, 1909, Haseman. 



3178 C. M., three, 90-130 mm. Santarem, Dec. 15, 1909, Haseman. 



3179 C. M., eleven, 55-130 mm. Caceres, May 24, 1909, Haseman. 



3180 C. M., eight, 45-120 mm. Bastos, June 26, 1909, Haseman. 



3181 C. M., one, 120 mm. Corumba, April 27, 1909, Haseman. 



1799 C. M., 12619 I. U. M., two, 155-165 mm. Lama Stop-Off, Eigenmann. 



1800 C. M., 12620 I. U. M., four, 170-174 mm. Wismar, Eigenmann. 



1801 C. M., 12621 I. U. M., two, 80-160 mm. Gluck Island, Eigenmann. 



1802 C. M., one, 175 mm. Kumaka, Eigenmann. 



1803 C. M., one, 130 mm. Christianburg, Eigenmann. 



Head 7.5 to 8.25, greatest depth 10 or 11 in the length to the end of the anal; 

 snout 2.9 to 3.5, interorbital 5 to 6 in the head; eye about 2.5 in the snout, 1.8 in 

 the interorbital and 5.8 to 6.8 in the head. 



Body compressed and elongate, slightly subcylindrical towards the head; 

 head conic and a httle produced; width of the head 1.75 to 2, depth of the head in 

 the occipital region 1.3 to 1.5 in the greatest depth; dorsal profile of the head 

 slightly sloping, of the body almost straight; ventral profile of the head and body 

 somewhat convex. 



Snout conic, a little truncate at the tip; mouth medium; gape short; upper 

 jaw barely projecting; eyes small; cheeks round and full. 



Caudal filament 3 to 3.5 in the total length; pectorals 1.75 to 2 in the head; 

 origin of the anal about on the vertical from the tip of the pectorals. 



Ground-color light buff to straw yellow; dorsal parts and the caudal peduncle 

 crossed by several bands of rather bright brown, which fade out near the middle 

 of each side; ventral parts almost without markings, or with numerous blotches of 

 pale brown; top of the head dark brown; sides of the head and mental region 

 speckled with brown; fins hyaline, rays more or less brown. 



Didrihulion: Guianas, Amazon, Parana. 



