PHILIPPINE MACROUROID FISHES GILBERT AND HUBBS. 489 



The scales are in 4| rows between the origin of the second dorsal 

 and the lateral line series; an additional series is inserted shortly 

 behind that point (the first rays of the second dorsal are broken 

 off in the type). The spinules on the body scales are set along 4 to 

 7 carinae 1 ; these spinules are similar to those of C. platorhynchus, 

 being strong, but somewhat weaker than in that species. The scales 

 on the front half of the infraorbital ridge often have- about three 

 series of spinules directed upward and backward; there are 8 scales 

 on each side of the ethmoid region of the infraorbital ridge, and 9 

 (8, 8) on the preorbital region, which is bounded above by a smaller 

 but similar series subtending the front half of the orbit; the sub- 

 orbital and preopercular portions of the ridge are covered by two 

 series of similar scales; the distance between the end of the in- 

 fraorbital ridge and the preopercular margin is contained 4.6 (4.6,4.0) 



Fig. 



17. COELORHYNCHUS ACAN THOLEPIS. TYPE. AFTER RADCLIFFE (" COELOR- 



HYNCHUS PLATORHYNCHUS, FORM ALPHA"). 



times in the postorbital. The median rostral ridge is covered by 11 

 (10, 9) subquadrate scales with 5 to 7 carinae radiating from near 

 the front margin of the scale. The scales of the occipital and 

 postorbital series, like those of C. platorhynchns, bear but a single 

 keel. The occipital scute has only a median spinous keel ; it is pre- 

 ceded in the two larger specimens by a short naked area, but in the 

 smaller paratype by two similar scutes, one on either side. The 

 scales along the supraorbital ridge are armed by numerous close-set 

 spinules. The other scales on top of head are arranged as in C . 

 platorhynchus, but are armed with 1 to 7 (usually several) carinae. 

 The scales in the region between the occipital and the infraorbital 

 ridges are in general similar to those on the body, but rather smaller; 

 a median series between the occipital and postorbital ridges is en- 

 larged; the scales on the lower half of the cheeks, downward and 

 backward from the eye, and those between the preopercular and in- 

 fraorbital ridges, are reduced in size and are usually armed only 

 by a single keel. The anterolateral region of the snout, the nasal 



1 In the two larger specimens ; the scales are mostly lost in the smaller frvo. 



