HOESE-MACKERELS. 



443 



southern hemispheres. C. crumeno])htliahmis, C. carangus, and 

 C. hippos, three of the most common sea-fishes, equally abun- 



Fig. 197. — Caranx ferdau. 



dant in the Atlantic and Indo-Pacific oceans ; C. ferdau, 

 from the Indo-Pacific, upwards of three feet in length. C. 

 armatus, ciliaris, gallus, etc., which hare an exceedingly short 

 and compressed body, with rudimentary spinous dorsal fin, 

 and with some of the rays of the dorsal and anal prolonged 

 into filaments. 



Argyriosus is closely allied to Caranx, especially to the last- 

 named species, but the lateral line has no plates whatever ; and 

 the body is scaleless, chiefly of a bright silvery colour. 



Two species from the tropical Atlantic. 



MiCROPTERYX. — Body much compressed, with prominent tren- 

 chant abdomen, covered with small scales ; lateral line not 

 shielded ; prseopercular margin entire. Cleft of the mouth rather 

 small ; prgeorbital of moderate width. The first dorsal continu- 

 ous, with seven feeble spines. No detached finlets. SmaH teeth 

 on the vomer and palatine bones. 



