134 BULLETIN 95, UNITED STATES NATIONAL MUSEUM. 



Genus MAPO Smitt. 



159. MAPO SOPORATOR (Cuvier and Yalenciennea). 

 PEJE-GAPO. 



GoMtis soporator CtrviEB and Valenciennes, Hist. Nat. Poiss., voL 12, 1837, 

 p. 42 (56) ; Martinique. — Jordan and Evebmann, Fishes North and 

 Mid. Amer., vol. 3, 1S98, p. 2216. — Gilbert and Starks, Fishes of 

 Panama Bay, Mem. California Acad. Sci., vol. 4, 1904, p. 171. 



Mapo soporator Snodgrass and Heller, Shore Fishes of the Galapagos 

 Islands, Proc. Washington Acad. Sci., vol. 6, 1905, p. 416. — Starks, 

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

 p. 799. 



Two specimens, field No. 277 (part), 10.5 and 12.4 cm. long, and 

 two, field No. 278 (part), 6.6 and 8.3 cm. long, from Lobos de Afiiera. 

 The latter were taken from a shallow tide pool. 



Head 3.3 in length ; depth 5 ; eye 4.5 in head ; snout 3.1 ; maxillary 

 2.2 ; interorbital 2 in eye ; D. VI-I, 9 ; A. I, 9 ; 13 scales in transverse 

 row, 33 transverse rows of scales from opercle to base of caudal. 



Body robust, slightly depressed anteriorly, compressed posteriori}' ; 

 head low, depressed, evenly rounded; cheeks tumid; eyes large, on 

 upper surface of head, interorbital concave; lips thick and fleshy; 

 mouth large, nearly horizontal; maxillary reaching a little behind 

 vertical from anterior border of eye; teeth in jaw in broad bands, 

 the outer row in each enlarged, tongue notched at tip ; head naked. 

 The breadth of the head varies considerably; in some of the larger 

 specimens in which the cheeks are A^ery tumid the breadth equals 

 the length, in others it is considerably less. 



Spinous dorsal low, the spines very weak; dorsal rays directed 

 backward, the posterior rays long, reaching base of caudal, 1.75 in 

 head; caudal rounded; anal similar in shape to soft dorsal, but 

 shorter; ventrals united into a disk, reaching vent, 1.5 in head; 

 pectoral rounded, the upper rays silk-like, longest rays 1.25 in head, 

 ventrals united into a disk, reaching vent, 1.5 in head. 



Color in spirits : A very dark olive brown, indistinctly barred with 

 darker; cheeks and jaws with darker markings. Description based 

 on a specimen 12.4 cm. long. 



Genus GOBIOIDES Lacepede. 



THE BAREITOS. 

 160. GOBIOIDES PERUANUS (Steindachner). 



Amhlyopiis broussonetii GtJNTHER, Cat. Fish. Brit. Mus., vol. 3, 1861, p. 



136; coast of Peru; not of Lacepede. 

 Amblyopus {Gobioides) peruamts Steindachner, Fisch-Fauna Causa und 



Fliisse bei Guayaquil, Denkschr. Akad. Wiss. Wien, vol. 42, 1880, p. 42 



(94), pi. 2, fig. 2, 2a; Guayaquil. 



