FISHES OF WEST COAST OF PERU. 133 



In an individual from Tumbes, in which the belly was inflated at 

 time of death, the prickles are A^ery distinct; these are sharp and 

 close-set on back from front of eye backward nearly to dorsal ; those 

 on ventral surface from front of eye to vent, anteriorly extending 

 up on side of head to level of middle of base of pectoral ; rest of head, 

 sides of body to vent and all of body behind vent without prickles. 



Color in spirits of Paita example, back very dark, thickly dotted 

 with small black spots, varying in size in different parts of the body, 

 but those on sides larger, but always smaller than pupil ; well-marked 

 light-colored concentric rings, characteristic of the species, cross back, 

 becoming quite indistinct on sides; the central one ovate in shape, 

 about three-fourths inch in diameter about midway between anterior 

 border of eye and base of caudal; three others cross back between 

 this and the posterior border of eye; a number of irregular lines 

 across snout ; belly white ; line of demarkation between color of sides 

 and belly; fins whitish gray. In the individual from Tumbes there 

 are fewer spots on the sides and back; and the concentric lines are 

 indistinct. 



Pacific coast of tropical America and the Galapagos Islands; gen- 

 erally common in sandy bays from Cerros Island to Peru; once re- 

 corded from San Diego. 



Family GOBIIDAE. 



THE GOBIES. 



KEY TO GENKRA. 



a\ Ventral fins separate ; body scaly ; vomer with a broad patch of villiform 

 teeth ; skull above with conspicuous elevated ridges, one of these bounding 

 the orbit above, the orbital ridges connected posteriorly by a strong cross 



ridge Philypmis, p. 133. 



a^ Ventral fins united. 



b^. Dorsal fins separate, free from caudal ; upper rays of pectoral silklike ; 



tongue emarginate Mapo, p. 134. 



b'. Dorsal fin continuous, the soft part and the anal joined to the base of the 

 caudal ; body elongate, entirely scaled ; teeth in a band ; those of the 

 outer series very strong OoMoides, p. 134. 



Genus PHILYPNUS Cuvier and Valenciennes. 



THE GUAVINAS. 

 158. PHILYPNUS MACULATUS (Gunther). 



Lenibus maciilatus Gunthee, Cat. Fish. Brit. Mus., vol. 1, 1859; Andes of 

 Ecuador. 



Philypmis lateralis Gill, Proc. Acad. Nat. Sci. Phila., 1860, p. 123; Cape 

 San Lucas. — Jordan and Evermann, Fishes of North and Mid. Amer- 

 ica, vol. 3, 1898, p. 2195. — Gilbert and Starks, Fishes of Panama Bay, 

 Mem. California Acad. Sci., vol. 4, 1904, p. 167. — Starks, Pishes from 

 Ecuador and Peru, Proc. U. S. Nat. Mus., vol. 30. 1906, p. 799 ; Guaya- 

 quil, Ecuador, and Eten, Peru. 



Philypnus niaculatus Regan, Biologia Centrali-Americana, Pisces, p. 5, 

 1906, pi. 1, fig. 2. 

 40656°— Bull. 95—17 10 



