NO. 1924. NEW PHILIPPINE ANACANTHINE FISHES— RADCLIFFE. 131 



typical examples), its projection beyond mouth 1 to 1.10 in post- 

 orbital (0.73 to 1.05 in typical examples), its lateral outline more 

 convex, the breadth in front of eye 1 to 1.24 in its length (1.21 to 1.43 

 in typical examples), and the eye proportionately longer, 3.29 to 3.77 

 in head (3.80 to 4.04 in typical examples). Six examples from 260 

 and 310 fathoms. Figure 3 is of a specimen 28.9 cm. in length taken 

 with a beam trawl at station 5589, near Mabul Island, Borneo, at a 

 depth of 260 fathoms. 



Fig. 4. — Ccelokhynchus commutabilis, form beta. 



Form beta. — Differs in having the under side of the head naked, the 

 snout shorter in examples of the same size, its projection be3^ond 

 mouth somewhat less, 2.92 to 3.24 in head, and the eye proportion- 

 ately larger, 3.47 to 3.71 in head. Six examples from 193 to 310 

 fathoms. Figure 4 is of a specimen 26.8 cm. in length taken with a 

 beam trawl at station 5503, off northern Mindanao, at a depth of 226 

 fathoms. 



Fig. S.— Ccelorhtnxhus commutabilis, form gamma. 



Form gamma. — Differs in having the dorsal profile of head much 

 lore convex, the under side of head naked, the snout shorter, 2.52 to 

 .76 in head, broader, 1.07 to 1.26 in its length, less pointed, and 

 slightly upturned at tip ; the mouth more anterior than in any of the 

 other forms, its anterior margin in vertical from anterior margin of 

 naked area surrounding nostrils (in related forms its anterior margin 

 is little or not at all in advance of vertical from anterior nostril); 

 projection of the tip of snout beyond mouth 1.11 to 1.38 in post- 



