476 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 50. 



Dorsal and ventral fins inserted just behind pectoral base, second 

 dorsal spine smooth, the ventral fdament reacliing seventh or eiglith 

 anal ray; anal inserted as far behind ventral bases as isthmus is 

 forward of same, anus just before anal insertion. 



Scales between lateral hne and middle of dorsal 3 in a transverse 

 series, between anal insertion and first dorsal 15; four to six divergent 

 rows of spinules on each scale, those of flanks equal in size, tliose 

 on scales between occiput and dorsal with a much higher median 

 row, the last spinules projecting well beyond border of scale. 



Color all faded save for dark hning of mouth, gill cavity, and 

 body cavity. 



The smaller number of scales above the lateral line and in a trans- 

 verse series, the difference in the ridges of the head, the shorter 

 snout, and other slight differences in proportions separate this 

 species from Coelorhynchus cliilensis. No barbel is evident, but 

 this may be due to accident. The following measurements are 

 in hundredths of the length anterior to anus: 



Total length 125 mm.; length to anus 42 mm.; of snout 0.22; 

 width of interorbital space 0.15; diameter of orbit 0.29; length of 

 head 0.72; of maxillary 0.20; of mandible 0.24; distance tip of snout 

 to premaxillaries 0.24; isthmus to anus 0.45; snout to dorsal 0.78; 

 interdorsal space 0.18; distance between terminations of supra- and 

 suborbital ridges 0.29; dorsal rays II, 9-63; ventral rays 7. 



