26o Field Museum op Natural History — Zoology, Vol. X. 



without head; anal fin small, the anterior rays reaching past the tips of 

 the posterior when deflexed, the longest ray notably longer than width 

 of head; ventral fins reaching origin of anal; pectoral fins a little longer 

 than the ventrals, reaching notably past the origin of the latter, 1.2 to 

 1.25 in head. 



Color grayish above, pale below; back with 4 or 5 indistinct 

 cross-bars, the first one under base of dorsal. Fins with dark spots on 

 the rays. 



There are only 2 specimens in the present collection, the type and 

 paratype, respectively 164 and 162 mm. in length. These were taken 

 at the mouth of the Rio Capeti, tributary of the Rio Tuyra. 



Evidently very closely related to L. filamentosa seminuda Eigenmann 

 & Vance. We have unfortunately no specimens of seminuda at hand, 

 but through the kindness of Dr. Eigenmann we were enabled to exam- 

 ine some photographs of this variety. These indicate that L. capetensis 

 has the abdominal plates much more weakly developed, leaving more 

 of the abdomen naked. The head appears to be narrower. Its width 

 at gill-opening is equal to its length from that point to tip of snout in 

 L. capetensis; in L. filamentosa seminuda the width of head at this point 

 is greater than its length from there to tip of snout. Our specimens 

 are somewhat smaller than the one from which the photographs at 

 hand were made, and it may be that the differences indicated are due 

 to age. In that case L. capetensis would become a synonym of the 

 latter. 



16. Loricaria fimbriata Eigenmann & Vance. 



Loricaria fimbriata Eigenmann & Vance, in Eigenmann, Indiana Univ. 

 Studies, No. 16, 191 2, 12 (Boca de Certegai & Bemal Creek, Co- 

 lombia). 



Head 3.6 to 4.5; depth 12.3 to 13.5; D. I, 7; A. I, 5; lateral scutes 30 

 0131. 



Body depressed throughout; head of moderate width; snout acute, 

 its margin granulate, 2.1 to 2.4 in head; orbital notch small; eye 5 to 

 6.65 in head; interorbital 5.5 to 6; mouth small, teeth bifid, the inner 

 cusp much the longer, each jaw with about 8 teeth on each side; the lips 

 papillose, the margins serrate; barbel short; temporal and occipital 

 plates and predorsal scutes striate and carinate; sides anteriorly with 3 

 keels, the upper one present on about 1 1 scutes, the other 2 coming very 

 close together, but not completely united, on the 20th or 21st scute; 

 ventral surface of head naked; abdomen laterally with a series of in- 

 conspicuous granular plates and a few very small ones on median line 

 of belly; 17 or 18 scutes from anal to base of caudal; origin of dorsal 



