112 CALipOENIA ACADEMY OP SCIENCES 



Family SPARID^. 



209. Calamus brachysomus {Lockington). 



Chrysopluys calamus Gunther, 1869, p. 421 (Panama). 



Known from the Gulf of California, from Panama, and from Santa Helena 

 Bay, near Guayaquil (Boulenger, 1898-9, Vol. XIV, p. 7). 



Several small specimens were seen in tbe market and a number of large 

 individuals were taken by tbe aid of dynamite about the islands. Four specimens 

 were preserved, ranging in length from 23 to 43 cm. 



Its southern representative, G. taurinus, is a more slender species and has 

 shorter dorsal sjiines and a shorter pectoral. Two specimens of taurinus which we 

 have examined from the Galapagos are darker in color, especially about the head, 

 and have the inner base of the pectoral blackish. 



The original description of C. brachysotnus contains numerous errors and can- 

 not be relied upon. To the description given by Jordan and Evermann (1898, 

 p. 1453), we make the following additions: 



Head 3]^ to 3| in length; depth 2 to 2|. Eye 3| to 4^ in head; snout 1| to 

 1|. The maxillary reaches to below the anterior orbital rim. There are but five very 

 small, short gill-rakers on the lower branchial arch. In our specimens, the dorsal is 

 constantly XII, 12 and the anal III, 10. The third dorsal si:)ine is contained 1^ to 

 2f times in the head; the second anal spine is generally longer than the third, but 

 does not reach to its tip in the declined fin. Its length is 85 to 4^ in head. 



