[SCIENTIFIC RESULTS OF THE PHILIPPINE CRUISE OF THE FISHERIES 

 STEAMER "ALBATROSS," 1907-10.— No. 12] 



NOTES ON SOME FISHES OF THE GENUS AJ^HA, FMIH.Y 

 OF CHEILODIPTERID.E, WITH DESCRIPTIONS OF FOUR 

 NEW SPECIES FROM THE PHILIPPINE ISLANDS. 



By Lewis Radcliffe, 



Scientific Assistant, U. S. Bureau of Fisheries. 



In identifying the large series of Cheilodipteridae collected by the 

 U. S. Bureau of Fisheries steamer Albatross on the Philippine expe- 

 dition, it was found that much confusion had resulted from the 

 remarkable similarity in color pattern, fin formulae, scaling, and 

 comparative measurements of some species of Amia. In the present 

 paper a small group of striped forms most m need of revision is 

 dealt wdth. 



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 ra3^s. The scale formula indicates the number of scales in a 

 transverse row from insertion of dorsal downward and backward to 

 and mcluding lateral line, and from origin of anal upward and for- 

 ward to lateral fine; and the number of transverse rows above the 

 lateral line, between upper angle of opercle and end of last caudal 

 vertebra. 



KEY TO CERTAIN STRIPED SPECIES OF AMIA HEREIN DESCRIBED. 



a^. Body with three to five broad reddish brown or slaty black stripes on each side 

 and one along the middle of the back. 

 b^. Dorsal spines 6. 

 c^ Body deep, compressed, 2.25 to 2.50; eye large, 2.2 to 2.4; dorsal vi-i,9; 

 anal ii,9; five broad lateral stripes, the three upper extending to base of 

 caudal; a short bar from upper part of eye, backward, thence upward, merg- 

 ing into first stripe and ending on tenth scale of lateral line compressa. 



Proceedings U. S. National Museum, Vol. 41— No. 1853. 



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