[SCIENTIFIC RESULTS OF THE PHILIPPINE CRUISE OF THE FISHERIES STEAMER 

 "ALBATROSS," 1907-10.— No. 9.] 



descriptions of three new fishes of the family 

 ciletodontim: from the Philippine islands. 



By Hugh M. Smith and Lewis Radcliffe, 



Of the U. S. Bureau of Fisheries, Washington. 



The species referred to in this paper represent hitherto unde- 

 scribed forms of the family Chsetodontidse obtained in the Philip- 

 pine Archipelago by the Albatross expedition. 



The measurements herein used represent the ratio between length 

 of part described and the standard length from tip of snout to end 

 of last caudal vertebra, with the exception of eye, snout, maxillary, 

 interorbital, fins, and least depth of caudal peduncle, which are 

 expressed in ratio to head measured from tip of snout to posterior 

 edge of opercle (not including opercular flap). The length of caudal 

 peduncle is measured between the verticals drawn at base of last 

 anal ray and at end of last vertebra. Even when the last dorsal 

 and anal rays are cleft to base they are still counted as single rays. 

 The scale formula indicates the number of scales in a transverse 

 row from insertion of dorsal downward and backward to and includ- 

 ing lateral line and from origin of anal upward and forward to lateral 

 line and the number of transverse rows above the lateral line, 

 between upper angle of opercle and end of last caudal vertebra. 



CHjETODON ARGENTATUS, new species. 



Dorsal xiv, 22; anal iii,16; scales 4+ 10 — 33. 



General form subrhomboidal, strongly compressed; head 3.12, 

 deeper than long, upper profile nearly straight; depth of body 1.63; 

 caudal peduncle shorter than deep, slender, depth 3.00; eye 3.00; 



Proceedings U. S. National Museum, Vol. 40— No. 1822. 



319 



