﻿TCHTPIYOLOGICAL RECONNAISSANCE OF COLOMBIA 



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sides. Lower surface otherwise naked. Pectoral truncate when opened, 

 the outer vdy not prolonged, reaching to the ventrals. Outer ventral ray 

 slightly produced, the rest of the margin of the tin rounded. Dorsal 

 truncate, the tips of the rays reaching equidistant when the fin is de- 

 pressed. Upper caudal filament about equal to distance from snout to 

 dorsal. Dorsal rays, each with about seven obscure spots. Caudal with 

 narrow undulating bars of black and white. Pectorals colored like the 

 dorsal, ventrals dusky, anal hyaline. Five obscure cross bands in the 

 type. Five teeth in the upper jaw, eight in the lower. 



Type, 114 mm. over all. Length to base of caudal, 84 mm. Boca de 

 Certegai CM., No. 3808. 



Paratypes, 2 specimens, the largest 52 mm. over all. Bernal Creek 

 CM., No. 3809 ; I.U.M.. No. 12714. The paratype differs from the type in 

 having seven obscure cross bands. The caudal blackish at base and at 

 its margin. Ventrals with two cross bars. Lips simple, not fringed. About 

 3 teeth in the upper jaw and about (5 in the lower. 



8. Loricaria filamentosa seminuda Eigenmann and Vance subspecies nov. 



Loiicaria filamentosa was described by Steidnachner from the lower 

 Magdalena. I secured five specimens from Soplaviento. CM. No. 3804 a-b ; 

 I.U.M. No. 12694 a-c, and one specimen from Calamar CM. No. 3805. 



The width of the body at base of last anal ray is contained 5-5.5 in its 

 distance from the caudal. The anal buckler is made up of from 17-25 

 plates. The plates of the ventral surface form a complete armature, 

 which is composed of the very wide lateral plates and two rows of median 

 plates. Between the pectorals the median plates split up into a large 

 number of small plates. 



A single specimen from Girardot, CM., No. 1307, measuring 182 mm. 

 to base of caudal, differs from the above. The median plates of the ventral 

 surface are much smaller, leaving a naked area between them and the lat- 

 eral plates. In other respects this variety is like the typical specimens. 



9. Loricaria fiiamentosa latiura Eigenmann and Vance subspecies n^v. 



Twelve specimens from Bocade Certegai CM., No. 3806; I.U., No. 

 12695, differ from the typical filamentosa very notably in the width of the 

 body and tail. The width at base of last anal ray is contained but four 

 times in the distance of its base from the caudal. The anal buckler is, on 

 an average, composed of fewer plates. The number usually runs from 

 14-18, but in one example reaches 25. 



10. Cyclopium chapmani sp. nov. 



Distinguished from all other species by the broad incisors of both 

 upper and lower jaw combined with the presence of a small spine in the 

 jidipose. Found associated with marmoratum,. 



Head 4; depth 7-8; D. 7; A. 7; eye minute, scarcely distinguishable, 

 about 10 in head ; interocular less than distance between eye and posterior 

 nares ; nareal flap triangular, produced in a small barblet; barbel just 

 reaching gill opening when laid straight back or a little shorter; pectoral 



