PHILIPPINE MACROUROID FISHES GILBERT AND HUBBS. 509 



Distance between center of anus and base of outer ventral ray 

 decidedly longer than orbit, a little longer than postorbital, and 

 contained 3.0 (2.4 to 3.0) times in length of head; distance between 

 ventral and isthmus, also longer than the orbit, contained 3.25 (2.8 

 to 3.4) times in head; distance between anus and isthmus, 1.6 (1.5 

 to 1.65). A narrow, naked fossa, which extends forward a short dis- 

 tance from the peritroct, covers an elongate glandular organ. 





Fig. 27. — Coelorhynchus commutabilis. Type. After Radcliffe. 



Scales rather small, in 5^ rows from the front of the second 

 dorsal fin to but excluding the lateral line series; in 6 or 6^ rows 

 just behind the long anterior curve of the lateral line. The scales 

 of the body bear usually 5, but varying from 3 to 7, carinae, which 

 are armed by a series of spinules overlapping the margin of the 

 scale; the median series is often enlarged. The spinules increase in 

 size posteriorly on each carina, and are rather broad at their base, 

 approaching in their structure those described and figured for C. 



Fig. 28. — Coelorhynchus commotabilis. After Radcliffe (" Coelorhynchus 

 commutabilis, form delta"). 



smithi (fig. 19). The terminal rostral plates vary* greatly in their 

 length, strength, and spination. The occipital and postorbital ridges 

 are covered by scales armed chiefly by a single spinous keel (by 

 several carinae in C. smithi) ; the scales on the remaining ridges of 

 the head bear numerous spinous carinae; those on the median ros- 

 tral ridge radiate from near the front of each scale (from near the 

 middle of the scale in C. radcliffei). The scales on the top of the 

 head are not greatly reduced in size, and bear several spinous 

 carinae; the scales covering the anterolateral region of the snout, 



