680 



EIGENMANN— NEW FISHES FROM 



7. Ancistrus triradiatus spec. nov. 

 Specimens Examined. 



Catalog Number. 



13935a I- type 



i3935^-« I-. paratypes 



7591 C 



13937a I 



13937^-c I 



7578 C 



Number of 

 Specimens. 



icf 



4 

 2 



29 



Length in Mm. 



113 

 61-85 

 78cf and 81 9 



77 

 43 and 70 



52 



Locality. 



Quebrada Cramalote, 



Villavicencio. 

 Quebrada Cramalote. 

 Quebrada Cramalote. 

 Barrigona. 

 Barrigona. 

 Villavicencio. 



All the specimens were collected by Manuel Gonzales at the 

 base of the Andes east of Bogota. 



Head 2.6-2.75 > depth 6.5 ; D. I, 7 ; A. I, 3 ; scutes 24 or 25, 

 4+1 or 2 in front of the adipose, 9-11+3 between anal and 

 caudal ; eye 7-9 in head, 3-5 in interorbital, 5 in snout ; width of 

 head about 1.25 in its length; mandibular ramus 1.8-2.33 in the 

 interorbital ; interopercle with 1 5-20 or more spines ; tentacles 

 profuse, fully developed in a specimen 78 mm. long, consisting in 

 the male of a row along the margin of the snout and up the sides 

 of the head in front of the preopercle and the usual Y-shaped series 

 on the snout ; the snout very narrowly naked in the female ; dorsal 

 reaching plate in front of adipose spine, its base equal to its distance 

 from some part of the adipose spine, pectoral spine in the male 

 reaching to the second third of the ventrals ; depth of caudal 

 peduncle about 2.5 in its length. Caudal rounded, more obliquely 

 so in young than in adult. 



Color of the type: body including head and belly, with faint, 

 roundish, light spots ; dorsal with about five series of comma-shaped 

 black spots in broken series lengthwise of the fin ; caudal with simi- 

 lar but shorter spots which merge into two continuous bars at the 

 base ; pectorals and ventrals with similar but larger spots, those of 

 successive rays alternating, outer angles of caudal light. In other 

 specimens sometimes the tip of the first two dorsal rays, and in the 

 young the margin of the caudal light, the markings on the fins con- 

 fined to the rays. Ventral surface in the small specimens plain. 



