76 SERIOLA ZONATA. 



Dimensions. The entire length, from the opercle to the tip of the caudal 

 fin, is equal to three heads and one sixteenth ; the elevation, without the dorsal 

 fin, is equal to one head; total length, fourteen inches. 



Splanchnology. The liver has two lobes, and a transverse portion ; yet they are so joined on their 

 ventral face, as to show scarcely any mark of separation, unless the viscus be removed from them ; 

 both lobes are short, but the right is rather the longer, and has its posterior border thin and irreg- 

 ular, or even divided into small lobuli, where it conceals the ccEcal appendages ; both send forward 

 pointed lobes to the hypochondria ; the gall-bladder is placed mostly behind the right lobe, and is 

 long and slender. The stomach is elongated, cylindrical, and extends nearly to the vent ; it has 

 tolerably thick walls, with numerous folds on its inner face ; the pyloric portion goes off near the 

 diaphragm, and is very short. The small intestine runs two thirds the length of the stomach, and is 

 then reflected to the pylorus, whence it returns to end in the rectum ; it has very firm and thick 

 walls, and its mucous membrane is finely reticulated ; the rectal valve is circular, and very 

 prominent. The coscal appendages are numerous, clustered together, and bound about the py- 

 lorus ; they are all very slender, though they vary in length, some of them being an inch 

 and a half long. The air-bladder is long, extending the entire length of the abdomen ; it is 

 pointed behind, truncated, and broad before, with a minute short horn on each side, that runs 

 upward and outward, and appears at first like a ligamentous band, but it is pervious ; its 

 walls are very thin. 



Habits. This fish is so rarely seen on our coast, that nothing can be said of 

 its habits. 



Geographical Distribution. The Banded Mackerel inhabits the Atlantic 

 coast of America, from New York to Georgia ; and what may be its farther limit 

 north or south remains to be determined. 



General Remarks. Dr. Mitchill first observed this animal, and described it as 

 a new species of Scomber, with the appropriate specific name zonatus, which has 

 been very justly retained by succeeding naturalists. 



