FISHES OF WEST COAST OF PEKU. 91 



Family SPARIDAE, 

 THE PoaeiES. 



Genus CALAMUS Swainson. 



119. CALAMUS TAURINUS (Jenyns). 



Chrysophrys taurina Jenyns, Zool., Voy. Beagle, Fishes, 1842, p. 56, pi. 12; 



Galapagos Islands. 

 Chrysophrys cyanoptera Valenciennes, Voj'. V^nus, vol. 5, 1846, pi. 4, fig. 



2 ; Charles Island. 

 Calamus taurinus Jordan and Evebmann, Fishes North and Mid. Amer,, 



vol. 2, 1898, p. 1354; Payta, Peru. — Snodgrass and Heller, Shore 



Fishes Galapagos Islands, Proc. Washington Acad. Sci., vol. 6, 1905. 



p. 379. 



Family GERRIDAE. 



THE MOJARRAS. 



KEY TO GENERA. 



r/\ Preopercle entire; second anal spine moderate Xysfcema, p. 91. 



a^ Preopercle serrate; second anal spine much enlarged Gerres, p. 92. 



Genus XYSTAEMA Jordan and Evermann. 



120. XYSTAEMA SIMILLIMUM (Regan). 

 CHAVELA. 



Xystaema cinereum Jordan and Evebmann, Fishes North and Mid. Amer., 

 vol. 2, 1898, p. 1373, part. — Gilbert and Staeks, Fishes of Panama 

 Bay, Mem. California Acad. Sci., vol .4, 1904, p. 114. — Snodgeass and 

 Heller, Shore Fishes Galapagos Islands, Proc. Washington Acad. Sci., 

 vol. 6, 1905, p. 382. 



Oerres simiUimus Regan, Biologia Centrali-Americana, Pisces, 1906, p. 38, 

 pi. 8, fig. 2 ; Rio Presidio, Mexico. 



Four specimens, field No. 301, 10.8 to 12.7 cm. long, from Eten, 

 taken in Rio de Eten, about 1 mile from the mouth. 



Head 2.9 in length ; depth 2.35 ; eye 3.2 in head ; snout 3.2 ; maxil- 

 lary 2.9; interorbital 3.2; D. IX, 10; A. Ill, 8; scales 6-10 (-f3)-12; 

 gillrakers short, 4-|-7. 



Body compressed, angular ; dorsal outline strongly arched, greatest 

 depth under origin of dorsal; ventral outline in front of anal com- 

 paratively straight, base of anal oblique; caudal peduncle slender, its 

 depth a little greater than diameter of eye; snout pointed; inter- 

 orbital broad and flat, profile from tip of snout to origin of dorsal 

 nearly straight ; eye large ; mouth moderate ; maxillary nearly reach- 

 ing the vertical from anterior margin of pupil ; anterior ventral out- 

 line of head slightly concave; no serrations on preopercle and pre- 

 orbital. 



