^g2 The Philippine Journal of Science ims 



Here described from three typical specimens in the collection 

 of the College of Agriculture at Los Bahos. Their dimensions 

 are given in the table. 



Measurements of three specimens of Lamnostoma orientalis 



Genus OSECTJLA Vahl 

 Oecula Vahl, Skrivt. Naturh. Selsk. Kjobenhavn 3 (1794) 2, 149; 

 Jordan and Davis, Apodal Fishes America and Europe, Report 

 U. S. Comm. Fish. 16 (1888) (1892) 622. 

 A small genus related to Sphagebranchus from which it is 

 separated by the possession of more or less developed fins, and 

 the presence of enlarged teeth on the vomer, and from Lamnos- 

 toma by the absence of false gill openings made by outer duplica- 

 tions of the true gill openings, and the position of the gill slits 

 which are lateral or only partially ventral. Gill slits vertical 

 or nearly so, the interspace but little, if any, narrower than 

 their length. Body small, rounded, with rather small head and 

 weak jaws; dorsal fin inserted behind gill openings. 



Species not numerous, one in the Mediterranean, others 

 Asiatic. 



Key to the Philippine species of Csecula. 



a\ Depth contained 25 to 30 times in length C. mindora. 



a 2 . Depth contained 18 times in length C. taylori. 



Caecula mindora Jordan and Richardson. 



Cxcula mindora Jordan and Richardson, Bull. U. S. Bur. Fisheries 



27 (1907) (1908) 239, fig. 4. 

 Sphagebranchus mindora Weber and Beaufort, Fishes Indo-Austr. 



Arch. 3 (1916) 322. 



Depth 25 to 30 in length, head 7.4 to 7.7, and 2.6 to 2.8 in 

 trunk; tail a little longer than head and trunk together; eyes 

 very small, 17 to 25 in head, about 3.5 in the slender, pointed 

 snout, which is about 7 in head ; mouth very wide, 2.5 in head 

 and extending far beyond eyes which are at the end of the first 

 third of gape; the distance between origin of dorsal and gill 

 openings is one-fourth the length of head; vertical fins mod- 

 erately developed; teeth small, sharp, recurved, in one row; 



