PHILIPPINE MACROUKOID FISHES — GILBERT AND HUBBS. 499* 



Type-specimen.— -Cat. No. 78224, U.S.N.M., 268 mm. in total 

 length; 101 mm. to anus; from Albatross station 5503. 



The form called gamma was apparently distinguished from beta 

 by its shorter, blunter snout. In the three specimens of ganvma 

 other than the type this difference is to be accounted for chiefly by 

 the fact that the terminal spine has been broken off. We are not 

 sure that the tip of the snout is broken in the type of gamma, which 

 is the largest specimen known; it may be that the snout becomes 

 blunter in very old individuals, or perhaps the spine in that speci- 

 men had been broken off and had since healed over. The measure- 

 ments are taken on this specimen with the assumption that the tip 

 has not been broken off, and when different from others are given 

 separately. 



The following description is based upon all of the specimens 

 which vary in length to anus from 46.5 to 134.5 mm.; those charac- 

 ters which vary with age are so noted. 



Fin-rays — first dorsal, II, 8 (rarely 7, sometimes 9) ; pectorals, 

 17 (15 to 18) ; ventrals, 7. 



This species resembles C. smithi in its arched contours; the snout 

 is slightly concave along its dorsal margin; the base of the first 

 dorsal fin is oblique; the greatest depth of the body lies below the 

 origin of the first dorsal fin, and is contained 2.0 (1.9 to 2.3; 2.6 in 

 young) times in the length of head; the greatest width across the 

 pectoral bases, 2.7 times (2.5 to 2.7; much narrower in young, 4.0). 



The snout is much longer in the young than in very large speci- 

 mens, as indicated in the figures and in the following : 



Table showing variation of length of snout l with size. 



1 Parts measured into head, except width at anterolateral angles. 



The form of the snout as seen from above is indicated by text fig- 

 ures 23 and 24. The same figures also show the courses of the strong 

 spinous ridges of the head; the least distance between the occipital 

 ridges, which diverge a little in both directions, is contained 1.95 

 times (to 2.1, 1.8 times in specimen 46.5 mm. long to anus) in the 

 postorbital length of the head. The subopercular flap is rather ob- 

 tusely pointed; its lower margin is nearly horizontal. The orbit is 



