282 ZOOLOGY. 



distinguished from its congener last described, by pos- 

 sessing four or five longitudinal black lines on each side 

 the body. In all the pelagic examples we obtained, 

 the sexes were very plainly denoted, by the existence of 

 either a milt or an impregnated roe. Their flesh has 

 the colour of raw beef, and is very good eating, al- 

 though rather inferior to albacore. 



Bonita do not accompany ships with the same con- 

 stancy as albacore ; and, unlike the latter species, their 

 visits are more frequent and protracted when the vessel 

 is making a rapid passage. I have occasionally found in 

 the stomach of this fish several living examples of the 

 parasitic worm, Distoma clavatum. 



THE RUDDER-FISH. 



( Caranx Antilliarum.J 



(Scomber Carangus, Bloch.) 



Branchiostegous rays, six ; first dorsal, eight, all spi- 

 nous ; pectoral, twenty-one ; ventral, six ; anal, eighteen ; 

 two spines in front of the anal fin ; a single row of teeth 

 in each jaw ; lateral line covered, near the tail, with 

 broad scales arranged transversely, and supporting a 

 row of reflexed spines. 



