380 



SNODGRASS AND HELLER 



92. ARCHOSARGUS POURTALESII (Steindachner). 



Sargus portalesii STEINDACHNER, Fische Afrikas, 39, 1881, Galapagos Islands. 

 Archosargus pourtalesii, JORDAN & BOLLMAN, Proc. U. S. Nat. Mus. 1889, 



181 (Chatham Island). JORDAN & EVERMANN, Fishes North and Mid. 



Amer., n, 1360, 1898. 



Range. Galapagos Archipelago. 



We have 10 specimens all taken at Elizabeth Bay, Albemarle. The 

 Albatross obtained one specimen at Chatham. 



Body very deep, much compressed, dorsal profile evenly convex 

 from snout to base of caudal peduncle, a rounded elevation before 

 eyes ; mouth much below the longitudinal axis of the body, lower 

 profile evenly rounded but less convex than dorsal profile ; pectoral 

 long and narrow, base as wide as eye, upper rays longest; caudal 

 deeply forked ; dorsal spines all short, those back of the third, of 

 equal length, the first 3 shorter, the first shortest, the second and third of 

 equal length, the second much thicker than the third ; enlarged incisors 

 in front of jaws -|, wide, flat, constricted at base ; smaller molar teeth 

 on sides of jaws. 



Color in life. Above and on sides metallic green-blue ; sides with 

 7 longitudinal gold stripes, a black spot above base of pectoral; snout 

 mottled olive and brown, sides of head silvery-copper; underparts 

 white ; iris golden-brown ; pectorals light dusky ; ventrals white", 

 dusky at tips; dorsal spines dark brown, membrane of spinous dorsal 

 amber, with bluish area basally back of each spine ; anal brownish, 

 spines amber, membrane and rays pale ; caudal dusky. 



MEASUREMENTS, FIN RAYS AND SCALES OF ArchosargUS f 



talesii. 



Family GERRID^. 

 93. EUCINOSTOMUS DOWI (Gill). 



Diapterus down GILL, Proc. Acad. Nat. Sci. Phila. 1863, 162, Panama. 

 Gerres dovii, STEINDACHNER, Ichthyologische Beitrage (iv), Sitzb. der k. 



Akad. Wissensch., vol. LXXII, part I, Dec., 1875, 13 (Callao, Peru: 



Galapagos Islands). 



