62 



PROCEEDINGS OF THE ACADEMY OF 



[Jan., 



simple, moderate pore. Interorbital convex. Preorbital partly 

 ensheaths upper maxillary edge, width 3 in eye. Hind preopercle 

 edge slightly emarginate, whole edge entire. 



Gill-opening extends forward opposite hind maxillary edge. 

 Rakers 10 + 13, lanceolate, about | of filaments, and latter If in eye. 

 Pseudobranchise long as gill-filaments. Isthmus narrowly con- 

 stricted forwards, with rather narrow branchiostegal membrane 

 across. 



Scales finely ctenoid, narrowly imbricated, in even lengthwise 

 rows more or less converging behind, and smaller along body edges. 



Fig. 24. — Chromis scotochilopterus sp. nov. 



Fins all scaly basally. Suprascapula small, thin, entire. Head 

 scaly, except lips, and on muzzle, suborbitals and interorbitals 

 smaller scales crowded closely. Cheek with 6 rows of scales, two 

 median rows enlarged. Opercles with moderately large scales. 

 Humeral scale moderate. Ventrals with median scaly flap f of fin, 

 and pointed axillary scale |. Upper branch of lateral line curving 

 up at first, then concurrent with upper limit of general squamation 

 on dorsal fins, and ends below front basal region of soft dorsal. 

 Tubes simple, large, and well over front half of each scale exposure. 

 Pores in horizontal section simple, small, one in middle of each scale 

 exposure, and 2 irregularly on caudal base. 



