EIGENMANN— SIXTEEN NEW PYGIDIID^. 693 



Head 6, as long as broad ; D. 10.5 (4 + 6.5) ; A. 7.5 (2 + 5.5) ; 

 P. 9; eye in middle of the head, interocular 3.5 in the head; teeth 

 in three series in each jaw, those of the outer row narrow incisors, 

 those of the second row much smaller incisors, those of the third 

 row conic. Head much depressed, interopercular spines numerous, 

 thirteen in the last row. 



Nasal barbel extending to the posterior margin of the eye, 

 maxillary barbel to the base of the opercular spines ; first pectoral 

 ray scarcely produced, equal to the portion of the head behind the 

 posterior nares ; origin of ventrals midway between opercle and 

 caudal, reaching to the vent ; origin of anal under posterior part of 

 the dorsal, the distance between its last ray and the base of the 

 middle caudal ray 4.4 in the length ; depth of the caudal peduncle 

 2.5 in its length ; caudal narrow, emarginate, a little more than five 

 in the length ; origin of dorsal midway between the tip of the caudal 

 and the occiput, over the tip of the ventrals, its distance from the 

 caudal 1.75 in its distance from the snout. 



A faint lateral band and obscure spots or marblings. 



4. Pygidium latidens spec. nov. 



13801 I., type, 53 mm. Small creek near the mouth of Rio Calima. 

 May 7, 1913. Henn. 



Head 5.5 ; D. 9.5 ; A. 7.5 ; P. 7 ; posterior edge of eye in advance 

 of the middle of the head ; interocular 3.5 in the head. 



Nasal barbel extending beyond the tips of the opercular spines ; 

 maxillary barbel extending beyond the axil, longer than the head ; 

 pectorals broad, as long as head without snout; pectoral filament 

 equal to the distance from the snout to the axil ; ventrals not near 

 reaching anus, their origin equidistant from the base of the middle 

 caudal rays and the interopercle ; origin of anal about under middle 

 of the dorsal, distance between base of the last ray and the middle 

 caudal rays five and one half in the length; caudal rounded, about 

 six in the length; accessory rays well developed; origin of dorsal 

 over anus, its distance from the middle caudal rays two in its dis- 

 tance from the snout ; gill-membrane free to below the anterior 



