﻿FISHES, GENUS ECSENIUS — CHAPMAN AND SCHULTZ 527 



profile with a notable backward slant from the vertical of about 16 

 degi'ees ; edges of both lips smooth, lateral line running a dorsal course 

 and ending opposite bases of last or next- to-last dorsal spines, about 

 an eye diameter behind tip of pectoral fin ; lateral line does not descend 

 to middle of side ; vertical line through dorsal origin passes a trifle in 

 front of upper edge of gill opening ; base of pectoral fin notably behind 

 base of pelvics ; last dorsal ray attached by membrane to dorsal edge 

 of caudal peduncle, but not to base of caudal fin ; anal origin opposite 

 base of last dorsal spine ; last anal ray attached by membrane to lower 

 edge of caudal peduncle ; pectoral fins reaching about two-thirds the 

 way to anus ; anal spines small, first embedded on females ; posterior 

 canine of lower jaw short but strong; teeth in upper jaw about 110, 

 movable; those in lower jaw movable but firmer, in one specimen 38, 

 the tooth farthest from the symphysis on each side enlarged; no 

 vomerine teeth; posterior margin of caudal fin truncate on smallest 



Figure 96. — Ecsenius hawaiiensis, new species. Holotype. (Drawn by Aime M. Awl.) 



specimen, with an outer ray in each lobe slightly elongate, whereas in 

 largest specimens the inner sixth or seventh caudal rays are shortest 

 and of nearly equal length, the fourth and fifth from center of fin in 

 upper caudal lobe are greatly elongate, and the third and fourth from 

 center in lower lobe are greatly elongate, sometimes twice the length 

 of shortest caudal fin ray; no cephalic crest; a vertical line through 

 front edge of upper lip passes through front edge of eye ; the forehead 

 is a little in front of front edge of upper lip. 



Coloration. — In alcohol, olive-brown to light greenish brown; 

 darker dorsally, paler ventrally ; the posterior part of body not notably 

 paler than anterior part of body as is E. hicolor; middle of sides with 

 five to seven short narrow vertical white bars not wider than pupil 

 and about two to four times longer than wide, the lower edge of these 

 bars a little below midlengthwise axis of body, then they continue 

 dorsally, fading out gradually before reaching base of dorsal fin; 

 pectoral, dorsal, and anal fins dusky; pelvics slightly dusky; caudal 

 fin with outer rays white or nearly so, the middle rays dusky ; behind 

 eye is an obliquely oblong blackish blotch, margined with pale ; a pale 

 streak extends posteriorly from behind middle of eye a short distance ; 

 corner of mouth white or pale. 



