676 EIGENMANN— NEW FISHES FROM 



These specimens were all collected by Manuel Gonzales in 

 Santander, Colombia, in tributaries of the Rio Suarez at an eleva- 

 tion of from 1,000-2,000 M. They agree in all essential respects 

 with A. unifasciatus. They dififer uniformly, but not always greatly 

 in having the thin membrane of the adipose oblique from the tip of 

 the spine to the most posterior point of its attached base. This is 

 characteristic of even the smallest specimens from Suescum, but 

 in the three specimens from Callejona the membrane is truncate 

 as m A. iinifasciatiis. In color they approach A. orientalis, there 

 being conspicuous, irregular, sometimes confluent spots on a light 

 background, usually there is a band across the body in the region 

 of the adipose fin. The ventrals extend to or even beyond the anus 

 in the very small individuals but usually fall short of it in the 

 larger. 



3. Astroblepus frenatus spec. nov. 



Among many specimens of Astroblepus micrescens from San- 

 tander there is one that probably represents another species. 

 7380 C, type, a female 43 mm. Ouebrada de San Joaquin, San- 

 tander. Gonzales. 



Head 3.25; D. I, 6; A. 7; interocular less than distance between 

 eye and nostril, 4.5 in the length of the head ; nasal flap moderate ; 

 barbel not extending beyond the posterior margin of the lip; 

 pectoral rays extending considerably beyond the base of the ventrals, 

 the outer rays to almost its middle ; origin of ventrals just in ad- 

 vance of the dorsal ray, reaching not quite to the anus, which is .75 

 of the distance from the origin of the ventrals to the anal; anal 

 obliquely truncate, not reaching the caudal ; caudal symmetrically 

 lunate, the outer rays slightly produced ; adipose fin a very low 

 fold, with a minute spiniferous spine, evident externally through 

 its spinules, which project beyond the margin of the fin; dorsal 

 spine equal to head less region in front of nares, the rays all coter- 

 minous when the fin is depressed ; distance of dorsal from snout 

 about 2.3 in the length ; premaxillary with one bicuspid tooth, the 

 rest all pointed. A dark streak from eye to base of barbels ; sides 

 with a few large spots ; a light bar down from behind the spine of 

 the adipose; base of caudal and two rows of spots dark. 



