258 Annals of the Carnegie Museum. 



Head 3.8 in length; depth 4.33; D. 7; A. 10; P. 12; V. 6; eye 3 in 

 head; interorbital space 2; snout 2.66; pectoral 1.33; ventral 2.5; 

 thirty-one scales in a lateral series. 



Posterior part of body compressed, anterior half high arid broad, 

 curvature of the dorsal profile stronger than that of the ventral; head 

 moderate, broad, depressed; snout short, obtusely rounded anteriorly, 

 upper surface flattened; mouth anterior, transverse; lower jaw longer 

 than the upper; jaws with a broad band of villiform teeth, palatine 

 with a narrow transverse band of villiform teeth; eye moderate, 

 superior and slightly anterior; five branchiostegals; thirteen gill-rakers 

 on the first arch ; gill-openings large. 



Origin of the dorsal slightly in advance of the end of the base of 

 anal, distance to the base of the caudal about half of that to tip of 

 snout, first ray shortest; pectorals inserted just below the middle of 

 sides, their tips reaching beyond the origin of the ventral; ventral 

 fins rather slender; the anal higher than the dorsal, anterior rays 

 shorter, middle rays prolonged; caudal fin broad, tip obtusely rounded; 

 caudal peduncle rather deep, its depth twice in the length of head. 



Body covered with large scales; snout and cheek smooth; no lateral 

 line. 



Color in formalin dusky above; sides and belly whitish; the edges 

 of scales dusky; top of head dark; a dark longitudinal stripe from 

 occiput to the origin of the dorsal; a very narrow dark band along the 

 middle of the sides; no dark marking below the eye; dorsal fin-rays 

 speckled with black; all the fins whitish. 



Length of body 44 mm. 



Described from a specimen from the Government Hatchery at 

 Shori. (Female). 



Habitat: The present species is not a native of the island. About 

 five years ago it was imported from Hawaii in order to exterminate 

 anopheline mosquitoes and has been propagated artificially. It was 

 introduced from Galveston, Texas, into Hawaii, and later into the 

 Philippines by Mr. Alvin Seale, for the purpose of destroying mos- 

 cjuitoes. 



Remarks: The male fish is very small; the anal modified into a 

 sword-like intromittent organ. Measurements of a male specimen 

 are as follows: Head 3.66 in length; depth 4.5; D. 7; A. 8 (third ray 

 prolonged); P. 12; V. 6; snout 3 in head; interorbital space 2; eye 2.5; 

 total length 24 mm. 



