PHILIPPINE MACROUROID FISHES GILBERT AND HUBBS. 461 



Coloration in alcohol. — The ground color is lighter than in C. nota- 

 tus, velifef, or mc6culatus; the belly is dark, becoming blackish be- 

 tween the ventral fins. An ocellated blackish spot extends upward 

 and backward from the pectoral onto the first row of scales above 

 the lateral line, covering 6 (5 to 7) rows of scales extending down- 

 ward and backward. There is a dusky blotch between the first 

 dorsal fin and the occiput, and only faint traces of a dusky saddle 

 representing the well-defined marking in G. notatus. The dark lining 

 of the buccal cavity becomes light near the gape ; -the light margin 

 along the outer edge of the branchiostegal membranes widens ven- 

 trally; the parietal peritoneum is pale purplish brown, punctulate, 

 and underlain with silvery. The whitish proximal color of the first 

 dorsal shades into black distally. The second dorsal and the anal 

 fins are light, the anal becoming uniformly dark anteriorly. The 

 ventral fin is dark except on the distal and larger portion of its first 

 ray; the pectoral fin, otherwise light, is darkened on its uppermost 

 'two rays. 



C. sexradiatus differs from the nearest relative, C . notatus, in 

 many points : the fewer rays in the paired fins ; the more convex mar- 

 gins of the snout; the longer and more prominent dorsoterminal 

 plate; the more posterior position of the anus; the longer ventral 

 fossa ; the somewhat smoother carinae on the scales ; many details, as 

 outlined heretofore, in the squamation of the head ; the lighter color, 

 with but traces of the dark saddles so characteristic of notatus. 



Table or measurements in hundredths of length to anus. 



Albatross station 



Total length in mm 



Length to anus in mm 



Length of head 



Length of orbit 



Tostorbital length of head 



Width of interorbital 



Width of suborbital 



Orbit to preopercle 



Length of snout 



Length of upper jaw 



Length of barbel 



Depth of bodv 



Width of body 



Anus to anal 



Anus to ventral 



Ventral to isthmus 



Height of second dorsal spine. 



Height of third dorsal ray 



Length of first dorsal base 



Length of interdorsal space... 



Length of oe^toral 



Length of outer ventral ray . . 

 Length of second ventral ray. 



i A small pseudocaudal developed. 



(sexradiatus, in reference to the number of ventral rays, which 

 appears to be characteristic to this species.) 



