gg PHILIPPINE POMACENTRIDJE 



completely reversed outward all around the mouth uncovering 

 the teeth. Scales 26 in longitudinal series; lateral line ending 

 under the hind portion of the rayed dorsal; dorsal spines 13, 

 scaly, with rounded and lobed membranes; head completely 

 scaled excepting the lips, orbital ring, and the space between the 

 nostrils and tip of snout. 



This genus is distinguished from Dichistodus of Bleeker in 

 having the two rows of teeth in each jaw of equal length, and 

 from both Dichistodus and Pomacentrus in the strangely devel-* 

 oped lips. It is known only- from the Nicobars, Andamans, Phil- 

 ippines, and Karakelang Island, one of the Moluccas. It probably 

 occurs throughout the intervening territory but has been over- 

 looked by collectors, as it lives in the interstices of coral. 



There is but a single species representing this genus. 



CHEILOPRION LABIATUS (Day) 



PLATE 9, FIG. 1 



Pomacentrus labiatus DAY, Fishes of India (1878) 384, pi. 81, fig. 2, 



as Pomacentrus labiosus. 

 CheUoprion labiatus WEBER, Fische der Siboga Exped. (1913) 342, 



fig. 73; FOWLER, Proc. Acad. Nat. Sci. Phila. 70 (1918) 53. 



Dorsal XIII, 13 ; anal II, 13 ; scales in lateral series 26 ; with 

 tubules 18 ; between lateral line and origin of dorsal 4 ; between 

 lateral line and vent 10. 



Body ovate, the outlines equally arched; depth 1.8 to 2 in 

 length; head 2.6 to 2.8; depth of caudal peduncle 6.2 to 6.7. 

 The wide, convex interorbital space 2.6 to 3 in length of head, 

 wider than length of maxillary, which is greater than that 

 of snout; the blunt snout 3.1 to 3.4 in head or about as long 

 as diameter of eye ; preorbital at angle of mouth less than half 

 an eye diameter; maxillary extending posteriorly to a little 

 before front edge of orbit. The extremely large and thick lips 

 covered with outward radiating papillae drawn together into dis- 

 tinct furrows, and completely turned back around mouth, thus 

 exposing the teeth. Teeth in two rows of equal length in each 

 jaw, minute, strongly compressed laterally, of uniform height, 

 with slightly rounded tips. Suborbital bone and posterior mar- 

 gin of preopercle with fine denticulations. 



Scales on top of head extending to nostrils, those at base of 

 dorsal fin high ; orbital ring naked. Middle and posterior dorsal 

 spines about equal in height; soft dorsal pointed; rayed anal 



