AGONOSTOMUS. 



67 



Heads of Agonostomiw monticola (a), A. salvini (/>), and A. nasutus (c), from the side and from below. 



to base of caudal ; spines moderate, the first, in the adult, about | the length of head or of the distance 

 between the origins of the dorsal fins. Anal II 10. Pectoral about | the length of head, in the adult 

 not extending to below the spinous dorsal ; ventrals originating below the middle of pectorals, in the 

 adult extending about | of the distance from their base to the origin of anal. Caudal forked. Caudal 

 peduncle 1| to 2 as long as deep. Silver}', back darker ; scales with dark edges, which often expand into 

 irregular spots. 



Hob. Mexico and Central America 2. — West Indies ^ -. 



K2 



