20 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 9 



Trachinotus paloma Jordan and Starks 



Two from Mazatlan, Mexico, December 8, 1931. Length 40-45 mm. 



Oligoplites saurus (Bloch and Schneider) 



One from Sihuatanejo Bay, Mexico, December 11, 1931. Length 63 

 mm. This species is known locally as the Yellow-tailed Leather Jacket. 



Oligoplites mundus Jordan and Starks 



One from Panama Market, December 24, 1931. Length 360 mm. 

 Color bluish above, golden below. Depth 2.8 in length. Maxillary extend- 

 ing far posterior of eye. 



Seriolidae Amber jacks 



Elagatis bipinnulatus (Quoy and Gaimard) 



A number of these "Rainbow Runners," as they are locally known, 

 were taken at White Friars Islands, February 14, 1932. They may be 

 distinguished by the single finlet behind the dorsal and the anal. Color 

 bright blue above to near middle of side, where a wide stripe of yellow 

 extends from head to tail ; this is bordered below by a narrow blue line, all 

 below being silvery white. Length 1 meter. 



Seriola dorsalis (Gill) 



Numerous specimens of the Yellow Tail or Amberjack, as they are 

 locally known, were taken along the Mexican coast and in the Galapa- 

 gos. They may be distinguished by the dark or brassy stripe from head to 

 tail. Length up to 1 meter. 



Nematistiidae Roosterfish 



Nematistius pectoralis Gill 



This fine food and game fish was taken at many localities along the 

 Mexican coast and in the Gulf of California. In life it has a black stripe 

 on the side extending up and back. Specimens of more than 1 meter in 

 length were taken. 



Kuhliidae Island Perch 



Kuhlia taeniura (Cuvier and Valenciennes) 



One from Gorgona Island, Colombia, February 12, 1934. Length 52 

 mm. This species has two oblique dark bars on the caudal lobes and a bar 

 in the center of the fin. 



