The Philippine Journal op Science, 



D. General Biology, Ethnology and Anthropology. 



Vol. VII, No. 4, 1912. 



DESCRIPTION OF A NEW ACANTHOCYBIUM FROM THE 

 PHILIPPINE ISLANDS. 



By Alvin Seale. 



(From the Ichthyological Section, Biological Laboratory, Bureau of 

 Science, Manila, P. I.) 



Acanthocybium forbesi Seale sp. nov. Forbes' Kingfish. (Plate I.^) 

 Head 4 in length without caudal; depth 7.3; eye 10 in head, 

 5 in snout; dorsal XXVI 1119, 9; anal II 10, 8. The lateral 

 line has its origin considerably above the opercles and is strongly 

 curved under the 14-17 dorsal spines. In the posterior portion 

 of its course the line is wavey. Between the strong curve of 

 the line and the caudal, it gives off numerous short vertical 

 branches, 77 above and 80 below the main line. These branches 

 consist of true mucous canals with pores and with 2 rows of 

 thin scales on each side ; they are of various lengths, unbranched, 

 and lie in a vertical plane, the lower branches extending half 

 the distance to the anal fin and the upper branches half the 

 distance to the dorsal fin. The lateral line proper is accom- 

 panied on each side by a narrow series of long thin scales. 



The eye is located directly above the base of the mandible. 

 The lower jaw is pointed and slightly the longer. The maxil- 

 lary is attached in such a manner as to admit of considerable 

 movement of the upper jaw. Each jaw has a single row of 

 rather large compressed teeth which are rounded at the top. 

 The teeth are very small at the tip of the jaw, but increase 

 in size, posteriorly, to 12 millimeters in length; vomer and 

 palatine somewhat roughened, but without teeth ; opercle rounded 

 with a very inconspicuous point posteriorly; preopercle toothed; 



' In our figure of this species the vertical branches of the lateral line are 

 emphasized, and the true lateral line shows but three rows of scales whereas 

 there should be six. 



283 



