Or 
THE GYMNOTID EELS OF TROPICAL AMERICA. 13 
3166 C. M., one, 90 mm. Cacequy, Jan. 31, 1909, Haseman. 
3167 C. M., two, 75-80 mm. Rio Boa Ventura, June 16, 1909, Haseman. 
3168 C. M., two, 65-120 mm. Villa Hays, Paraguay, April 18, 1909, Haseman. 
3169 C. M., one, 120 mm. Rio Mamoré, Sept. 19, 1909, Haseman. 
4894 I. U. M., eighteen, 75-140 mm. Rio Grande do Sul. 
3170 C. M., one, 80 mm. Puerto Suarez, Sept. 19, 1909, Haseman. 
1792 C. M., 12615 I. U. M., four, 57-165 mm. Mud Creek, Aruka, Shideler. 
1793 C. M., 12616 I. U. M., two, 100-165 mm. Chipoo Creek, Shideler. 
1794 C. M., 12617 I. U. M., two, 95-105 mm. Pacopoo Pan, Wm. Grant. 
1795 C. M., 12618 I. U. M., four, 118-160 mm. Nickaparoo Creek, Wm. 
Grant. 
1796 C. M., one (broken), 80 mm. Savannah Landing, Eigenmann. 
12635 I. U. M., one, 95 mm. Creek below Savannah Landing, Eigenmann. 
1797 C. M., one, 117 mm. Twoca Pan, Rupununi, Wm. Grant. 
1798 C. M., one, 70mm. Kumaka, EKigenmann. 
Head 8.25 to 9.25, greatest depth 7 to 9 in the length to the end of the anal; 
anal rays 220 to 260; snout 3.3 to 3.7, interorbital about 3 in the head; eye 2.5 in 
the interorbital, 2.5 to 3 in the snout, and about 6 in the head. 
Body rather cylindrical, though slightly compressed caudad; head chubby, 
somewhat conic; width of head 2 to 2.5, depth of head in occipital region about 
1.75 in greatest depth; anus twice the diameter of the eye behind the vertical 
from the eye; dorsal profile of the head distinctly slanting, of the body weakly 
convex; ventral profile regularly convex. 
Snout short and truncate; mouth small; gape very short; eyes moderately 
small; jaws equal. 
Caudal peduncle 4.5 to 5 in the total length; pectorals 1.5 to 2 in the head; 
origin of the anal about the length of the snout behind the origin of the pectorals. 
Ground-color buff, overlaid with chocolate-brown; dorsal parts dark; ventral 
lighter; numerous bands of dark brown crossing the body but not the anal; lateral 
line buff; head dark; fins bluish white to hyaline; rays more or less black. 
Distribution: Rio Magdalena, Guianas, Amazons south to Rio de la Plata. 
10. Hypopomus artedi (IKaup). 
Sepa, Thesaur., III, tab. 32, fig. 2. 
Rhamphichthys artedi Kaur, Apod., 128, 1856 (Mona); GtnrTHER, Cat., VILE 
6, 1870. 
Brachyrhamphichthys artedi EtGENMANN AND EIGENMANN, Proc. U. S. Nat. Mus., 
XIV, 1891, 62. 
Rhamphichthys miilleri Kaur, Apod., 129, 1856 (French Guiana); GUNTHER, Cat., 
Vill 622870: 
Hypopomus miilleri Gini, Proc. Acad. Nat. Sci. Phila., 1864, 152. 
