94 BULLETIN 95^ UNITED STATES NATIONAL MUSEUM. 



but does not present the marked difference stated to exist between 

 G. lineatus and G. hremmanus. 



One specimen, the type, No. 77743, U. S. Nat. Mus. (field No. 1013), 

 26.5 cm. long, from Tumbes. 



Family KYPHOSIDAE. 



THE RUDDEHFISHES. 



Genus DOYDIXODON Valenciennes. 



123. DOYDIXODON LAEVIFRONS (Tschudi). 

 BABUNCO; GALLINAZO. 



Pimelepterus laevifroiis Tschudi, Fauna Peruana, Fishes, 1845, p. 18; 



Huacho. 

 Doydixodon fasciatum Kner and Steindachner, Neue Fisch. Mus. Godef- 



froj% Sitz. Akad. Wiss. Wien, vol. 54, 1866, p. 358, pi. 1, fig. 2 ; Iquique. 

 Doi/dixodon laerifrons Jordan and Fesler, Rev. Sparidae, Rep. U. S. Fish 



Conim., 1889-1891 (1893), p. 532.— Steindachner, Fauna Chilensis. 



1898, p. 289. — Abbott, Marine Fishes of Peru, Proc. Acad. Nat. Sci. 



Phila., 1899, p. 351; Herpet.-ichthyol., Ergebnisse einer Reise uach 



Siidamerika, Denkschr. Akad. Wiss. Wien, vol. 72, 1902, p. 29. — Starks, 



Fishes from Ecuador and Peru, Proc. U. S. Nat. Mus., vol. 30, 1906, 



p. 792, pi. 66, fig. 2. 



Two specimens, field Nos. 09718 and 09705, respectively 27 and 

 31.5 cm. in length, from MoUendo; and one specimen, field No. 09485, 

 36 cm. in length, from Lobos de Afuera. 



Head 3.45 in length ; depth 2.42 ; eye 5.8 in head ; snout 2.5 ; in- 

 terorbital 2.3; pectoral 1.2; D. XII, 15; A. Ill, 12; scales 15-55 

 (+3)-20. 



Body deep, ovate, caudal peduncle deep, compressed, depth 2.81 in 

 head ; snout blunt, convex ; interorbital broad, rounded ; eye small, 2.33 

 in snout, 2.53 in interorbital ; teeth small, compressed, those on man- 

 dible in five oblique rows, running downward and inward toward the 

 symphysis; a broad band of smaller teeth behind the incisors; gape 

 of mouth reaching nearly to vertical from anterior border of pupil ; 

 jaws subequal, the lower slightlj^ included; scales regular in arrange- 

 ment, those above lateral line anteriorly small, increasing in size 

 posteriorly ; a few scales on upper part of opercle ; cheek scaled ; pre- 

 opercle, subopercle, and snout naked ; soft dorsal falcate, longest ray 

 1.55 in head; caudal concave, upper lobe longer; distal portion of 

 anal concave, anterior rays longest, 1.33 in head ; ventrals not reach- 

 ing vent, 1.47 in head ; pectoral angulated. 



Color in alcohol : Back dusky ; belly reddish brown ; fins dusky. 

 Description of a specimen 36 cm. in length from Lobos de Afuera. 



