FISHES OF WEST COAST OF PERU. 153 



brownish black areas on dorsal, corresponding to those on body, 

 these confined to the distal half of the fin; alternating with the first 

 and second, and, v,ith the third and fourth are small black areas on 

 margin of fin; posterior half of caudal black; two indistinct black 

 marginal areas on anal posteriorly, with traces of about four others 

 anteriorly; pectoral brownish at base, bordered by a V^haped area 

 of white, then a parallel brown area, margin of fin lighter; fins, 

 where they are not marked with brownish black areas, white; top 

 and sides of head brownish black, ventral surface white. This species 

 closely resembles P. porosus of the Chilian fauna, but may be readily 

 separated by the much longer head, the length of head in P. porosus 

 being, according to Glinther, 4.66 in the total length, while in this 

 species it is only 3.41. 



We know of no record of P. porosus from the coast of Peru and 

 therefore have not included it in this list. 



Family GOBIESOCIDAE. 



THE CLINGFISHES, 



KEY TO GENERA. 



a\ Incisors of lower jaw with entire edges; opercular spine strong; vertebrae 

 about 26 Gohiesox, p. 153. 



a*. Incisors of lower jaw tricuspid or serrate (at least in those on sides of 

 jaw) ; opercular spine weak; vertebrae about 28 Arhaciosa, p. 155. 



Genus GOBIESOX Lacepede. 



184. GOBIESOX SANGUINEUS (MuIIer and Troschel). 



Sicyases sanguineus Mullee and Tboschel, Wiegmann, Arch Naturg., 

 1843, p. 298.— GtJNTHER, Cat. Fish. Brit. Mus., vol. 8, 1S6L, p. 494.— 

 Steindachnee. Fauna Chilensis, vol. 2, 1898, p. 315. 



Gohiesox hrevirostris Gay, Hist. Chile, Zool., vol. 2, 1848, p. 335, pi. 9, 

 fig. 1. 



Gohiesox sanguineus Abbott, Marine Fishes of Peru, Proc. Acad. Nat. Sci. 

 Phila., 1899, p. 363. 



Six specimens, 7.3-11.5 cm. long (no locality). 



Head 2.37 in length ; breadth of head 2.81 ; depth of body 6 ; eye 

 5.42 in head ; snout 3.16 ; maxillary 3.8 ; interorbital 2.53 ; pectoral as 

 wide as long, 3.16; D. 8; A. 6; C. 8; P. 23; V. 4 (5). 



Head and body anteriorly broad and much depressed, compressed 

 posteriorly; caudal peduncle slender, its depth 4.75 in head; head 

 nearly as broad as long, sides converging toward the blunt snout; 

 upper surface of head and interorbital space flat ; mouth small, in- 

 ferior, horizontal; lips fleshy, the lower 3-lobed, somewhat after 

 fashion of Exogloss'inn', maxillary scarcely reaching vertical from 

 anterior border of eye; teeth in each jaw in a single row, those in 



