122 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



vomer and each palatine; interorbital (bony) 4% to 53^, concave; 

 opercular spine slender, projects beyond gill opening; preopercle ridge 

 entire. Gill rakers 7 + 17, lanceolate, equal gill filaments or 3 in 

 orbital socket. 



Scales 48 or 49 in lateral line to caudal base and 5 to 8 more on 

 latter; 4 above, 7 below, 7 or 8 predorsal to occiput and 22 to end of 

 snout; row of scales along very narrow cheek below eye. Tubes in 

 lateral line slender, each bifid and diverge. Most fins more or less 

 scaly, at least basally, except spinous dorsal, caudal largely covered. 

 Scales with 12 to 15 basal radiating striae; 49 to 70 apical denticles, 

 in 5 to 7 transverse series; circuli fine. 



D. VII-I, 10, i, third spine 2 to 2% in total head length, first 

 branched ray 1% to 23^; A. II, 9, i, second spine 5 to 6, first branched 

 ray 2}4 to 2%; caudal 1)4 to 1%, forked, lobes pointed; least depth 

 of caudal peduncle 3% to 4; pectoral 2)4 to 2%; ventral V/% to 2%. 



Body generally brown, scales all more or less sprinkled with deep 

 sepia brown or dusky dots, mostly marginal. Head and fins all 

 more or less with dusky so whole appearance soiled or dark. Iris and 

 inside gill opening dusky to blackish. Gill covers with dusky silvery 

 or neutral tints, blue tinge on opercle. 



Philippines, Hawaii. We have compared the type with the mate- 

 rials of Smith and Radcliffe of their Hynnodus megalops and are 

 unable to separate them. Their contention that Gilbert's fish "is 

 slenderer, has a shorter head, snout and maxillary, and a slenderer 

 caudal peduncle " are simply minor discrepancies of portraiture and 

 should never have been credited as specific distinctions! There are 

 absolutely no grounds for separating the Philippine fish. In some 

 respects Gilbert's figure has been incorrectly idealized as the broken 

 rays, compared with Philippine examples, show they are in agreement. 



(D. 5388). 3778 to 3780. Bagatao Island Light (outer) S. 86° E., 21 miles 

 (12° 51' 30" N., 123° 26' 15" E.). March 11, 1909. Length 130 to 156 

 mm. (No. 3779 is type of Hynnodus megalops Smith and Radcliffe, No. 

 70255, U.S.N.M., 156 mm.). 



(D. 5508). 2364. Camp Overton Light, Iligan Bay, S. 6° E., 4.9 miles, northern 

 Mindanao (8° 17' 24" N., 124° 11' 42" E.). August 5, 1909. Length 

 105 mm. 



51601 U.S.N. M. Hawaii. Albatross Collection. Type of Hynnodus atherinoides 

 Gilbert. Length 113 mm. 



Genus CHEILODIPTERUS Lacepede 



Cheilodipterus Lacepede, Hist. Nat. Poiss., vol. 3, 1802, p. 539. Type 



C heilodipterus lineatus Lacepede, designated by Jordan and Evermann, 



Genera of Fishes, pt. 1, 1917, p. 63. 

 Chilodipterus Gunther, Cat. Fish. Brit. Mus., vol. 1, 1859, p. 248. Type 



Cheilodipterus lineatus Lacepede. 

 Paramia Bleeker, Nederland. Tijdschr. Dierk., vol. 1, 1863, p. 233. Type 



Cheilodipterus lineatus Lacepede. Paramia Bleeker proposed to replace 



Cheilodipterus Lacepede. 



