ft 



16 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 9 



Length 469 mm. One from Panama Market, Panama, December 24, 

 1931. Length 394 mm. Dorsal V-I, 8; anal I, 8. Scales 120. Body with 

 20 dark bands about equal in width to their interspaces. 



Sphyraena idiastes Snodgrass and Heller 



One from Tagus Cove, Albemarle Island, Galapagos, January 13, 

 1934. Length 60 mm. This specimen has 8 dark bars over the back and 

 a dark stripe down the side, also 3 dark spots posteriorly on the under side 

 of the body. Maxillary not reaching eye. Origin of ventrals slightly in 

 advance of origin of spinous dorsal, being midway between tip of upper 

 jaw and middle of caudal peduncle. 



Polynemidae Threadfins 



Polynemus approximans Lay and Bennett 



Fifteen from Mazatlan, Mexico, December 7, 1931. Length 49-225 

 mm. Five from Tenacatita, Mexico, December 10, 1931. Length 50-109 

 mm. Two from Sihuatanejo, Mexico, December 12, 1931. Length 166- 

 223 mm. Two from Corinto, Nicaragua, February 8, 1932. Length 101- 

 158 mm. Four from Port Utria, Colombia, February 14, 1934. Length 

 40-53 mm. Six pectoral filaments. Dorsal VIII-I, 12; anal III, 14. 

 Scales 63. 



Polynemus opercularis (Gill) 



Three from Mazatlan, Mexico, December 7, 1931. Length 305-325 

 mm. One from Tenacatita, Mexico, December 10, 1931. Length 229 

 mm. One from Panama Market, Panama, December 10, 1931. Length 

 287 mm. 



Acanthocybiidae Wahoos 



Acanthocybium solandri (Cuvier and Valenciennes) 



A number of these large game fishes were taken during the cruise. 

 They were especially abundant at Cocos Island, Februaiy 2-3, 1932, and 

 are an excellent food fish. Specimens exceeding 1^ meters in length were 

 taken. They are known locally under the following names : Guahu, Gua- 

 rapucu, Peto, Queenfish, Springer, Ono. 



Gybiidae The Sierras 



S comber omorus sierra Jordan and Starks 



A number of these fine food and game fishes were taken along the 

 coast of Mexico and in the Galapagos Islands. They may be distinguished 



