CHEILODIPTERID FISHES — SCHULTZ 419 



16 on each side; gill rakers on first arch 5 + 14; about 31 scale rows 

 ^crossing lateral line; preoperciilinn with double edge, the lower angle 

 of the anterior edge with fine serrations, the posterior edge completely 

 serrated; operculum with two weak spines, edge smooth; subopercu- 

 lum and interoperculum with a few weak serrations; inside of gill 

 chamber blackish; peritoneum black, anus immediately in front of 

 origin of anal fin; principal caudal rays 17; pseudobranchiae large; 

 gill membranes extending far forward, free from isthmus except where 

 they join it at its anterior tip ; branchiostegals 6 ; caudal forked. 



Measurements. — The measurements outside the parentheses are in 

 millimeters, and those in parentheses are expressed in hundredths of 

 the standard length. Distance from tip of snout to base of midcaudal 

 fin rays 105; greatest depth of body 30.5 (29) at origin of spiny 

 dorsal; least depth of caudal peduncle 11.9 (11.3) ; length from base 

 of last anal ray to base of midcaudal fin rays 25 (23.8) ; head 37 

 (35.2) ; diameter of eye 10.8 (10.3) ; snout 9.0 (8.6) ; interorbital 

 space 9.3 (8.9) ; length of longest pectoral fin ray 26 (24.8) ; length of 

 second anal spine 9.6 (9.1) ; length of longest dorsal fin spine or third 

 spine 17 (16.2) ; tip of siiout to origin of spiny dorsal fin 38.7 (36.8) ; 

 tip of snout to origin of anal fin 71.3 (68) ; tip of snout to insertion 

 of pectoral fins 37 (35.2) ; tip of snout to insertion of pelvic fins 39.7 

 (37.8) ; tip of snout to center of anus 67.8 (64.5) ; length of maxil- 

 laries 16.6 (15.8) ; color in alcohol, silvery on sides and belly, darker 

 above. 



This species is distinguished from other species in the genua 

 Synagrops as indicated in the key. 



SYNAGROPS PHILIPPINENSIS (Gunther) 



Acropotna phUippinense* Gunther, Zoology of the voyage of H. M. S. CliaUenffer, 



vol. 1, pt. 6, p. 51, 1880. 

 Parascomhrops peUucidus Aixock, Joiirn. Asiat. Soc. Bengal, vol. 58, pt. 2, p. 296, 



pi. 22, fig. 1, 1889. 

 Synagrops malaijanus Weber, Die Fiselie der S/Z^oi/cr -Expedition, p. 1'96, fig. 52, 



1913. 



SYNAGROPS ARGYREA (Giroert and Cramer) 



Melanostoma aroyremn* GiLsEpa' and Cramer, Proc. U. S. Nat. Mns., vol. 19, 

 p. 416, pi. 39, fig. o, 1S97. (U.S.N.M. No. 47732, holotype.) 



SYNAGROPS GROSSIDENS (Smith and Radcliffe) 



Amia {Amioldes) grossldens-^- Smith and Radcliffe. in Radcliffe, Proc. U. S. 

 Nat. Mus., vol. 41, p. 440, pi. 36, fig. 1, 1912. (U.S.N.M. No. 70250, type.) 



SYNAGROPS MICROLEPIS Norman 



Synagrops microlepis* Norma??, Discovery Reports, vol. 12, Coast fishes, pt. 1: 

 The South Atlantic, p. 12, fig. 3, 193."i. (U.S.N.M. No. 10S1S6, parutype.) 



