PHILIPPINE MACROUROID FISHES—GILBERT AND HUBBS. 415 
Snout, 3.4 to 3.5 in head, longer than the orbit, the greatest 
length of which is contained from 4.0 to 4.2 times in the head. The 
interorbital is subject to considerable variation, as in C. semi- 
scaber, its least width being contained 4.1 to 5.5 times in the head. 
The least suborbital width is half the length of the orbit. The 
mouth is somewhat oblique; the maxillary extends from below the 
lateral rostral tubercle to the vertical passing through the center 
of the orbit; length of upper jaw, 3.3 to 3.4. The teeth in both jaws 
are in moderate villiform bands; the teeth in the outer premaxil- 
lary series are somewhat heavier and more widely spaced than those 
in the remainder of the band. Barbel variable in strength, 2.4 to 
3.9 in orbit. The gill-membranes are united, without a free fold. 
Six branchiostegals. The slit before the first gill-arch is greatly 
reduced, being contained only 4.0 to 4.5 times in the orbit. Eight 
rows of scales separate the origin of second dorsal from the lateral 
line scales; somewhat farther back a ninth row is inserted along the 
dorsal base; there are six or seven rows between the last ray of 
the first dorsal and the lateral line. The scales are smaller on the 
belly, and on the head with the exception of the opercular region. 
The gular and branchiostegal membranes, and the shoulder- girdle 
beneath the opercles, are wholly devoid of scales. The spinules 
on the scales are not so definite in their arrangement as in C’. semi- 
scaber; a quincunx order can be made out on most of them; the 
spinules are aligned in about 15 series which converge more or 
less rapidly toward the apex of the scale; the spinules are of sub- 
equal size and conic form; the last one projects beyond the 
margin of the scale. The terminal rostral tubercle-is rather small, 
and is armed with conic spinules of moderate strength, and not 
definitely arranged in series; the lateral tubercles are weak but 
distinct. : 
Ten pyloric caeca, about as long as the orbit, were counted in 
one specimen. ‘The anus lies immediately in advance of the anal 
fin. The distance between the base of the outer ventral ray and 
the center of the anus is equal to, or greater than, the postorbital 
length of the head; the distance between the ventral fin and the 
isthmus is only 0.7 to 0.8 the postorbital length of the head. 
The first dorsal spine is short and slender; the second spine is 
produced into a strong, compressed, and exceedingly long filament; 
the entire length of the spine is much greater than the length to 
the anus, being considerably more than half the length of the fish 
(except in the largest specimen); the anterior keel of the spine 
bears only 11 or 12 denticulations of moderate strength, confined 
to a basal portion of the spine contained 7.4 times in its entire 
length, and 2.5 to 3.0 times in the head; the length of the head is 
119404—20——4 
