PHILIPPINE MACROUROID FISHES GILBERT AND HUBBS. 473 



in our material is always less than half the length of the snout, but 

 to a variable degree. Weber 1 finds only 2 specimens out of 19 in 

 which the snout is more than twice as long as the least interorbital 

 space. These differences may, however, be due to different methods 

 of measurement. The methods which we follow are clearly given in 

 the introduction to our paper on Japanese Macrouroids. 2 C. argus 

 can not be identified with any other of the seven species of the C. 

 notatus group, all of which are described in these pages. 



List of stations. 



Albatross 

 station. 



Locality. 



Depth in 

 fathoms. 



Bottom 

 tempera- 

 ture. 



Number 

 of speci- 

 mens. 



5387 

 5112 

 5118 

 5265 

 5291 

 5298 

 5421 

 5247 

 5549 

 5135 



Between Burias and Luzon 



China Sea, off southern Luzon 



do .. 



do 



do 



do 



Between Panay and Guimaras Islands. 



Gulf of Davao/southern Mindanao 



Near Jolo Islands 



do 



209 

 177 

 159 

 135 

 173 

 140 

 159 

 135 

 232 

 161 



52.4 

 52.4 



53.5 



57.4 



We have prepared a detailed description of our material : 

 Fin-rays — first dorsal, II, 7 to 9 ; pectoral, 14 to 17 ; ventral, 7. 

 The dorsal contour varies somewhat, that of the snout being more 

 or less concave, while that behind the snout is more or less convex. 

 Greatest depth of body, 1.85 to 2.0 in head; width across pectoral 

 bases, 2.6 to 2.9, equal to, or somewhat less than, the depth of the 

 body below the origin of the lateral line. The dorsal contour is not 

 elevated at the occiput. The snout is narrow anteriorly as in notatus, 

 sexradiatus, and triocellatus, its sides being quite evenly convex for- 

 ward to just behind the produced dorsoterminal plate, the length 

 of which is contained from 2.9 to 3.9 times in the postorbital. In 

 some specimens the anterolateral angles of the snout are fairly 

 prominent, while in others they are scarcely apparent. Preocular 

 length of snout, 2.2 to 2.5 3 in head; preoral length, 2.4 to 2.9; width 

 of snout opposite front of orbits, 2.7 to 3.05. The width of the snout 

 at the posterior end of the ethmoid region of the infraorbital ridge 

 is about equal to the length of the orbit, and is contained from 1.0 

 to 1.25 times in the distance from that point to the tip of the snout. 

 The subopercle has the usual pointed flap. The orbit is of rounded- 

 oblong outline, its length being contained from 3.4 to 3.8 times in the 

 head: 1.0 to 1.1 times in the postorbital length to the edge of the 



1 Doctor Weber has kindly reexamined his material as regards this and other points 

 which were of interest to us. 



2 Proc. U. S. Nat. Mus., vol. 51, 1916, p. 147: 



3 These measurements of the parts of the head were made on each of about 12 speci- 

 mens, in which the heads measured from 41 to 53 mm. 



