710 GEOLOGICAL SURVEY OF NEW JERSEY. 



and tongue ; first dorsal of eight spines ; two anal spines ; ventrals 

 thoracic; no air-bladder; caudal forked; branch iostegals seven; 

 vertebrse more than twenty- four. 



ELA.CATB, Cuv. 



B. Canada, L. [ailanticus, niger.) Crab-eater. Cobia. Serge ant- lis 1 1. 

 Snooks. Ling. 



Olive brown, with broad, dark band on sides, bounded above 

 and below by an indistinct band ; below silvery ; head much de- 

 pressed ; pectorals falcate ; upper lobe of caudal a little the 

 longer ; lateral line wavy and irregular. Dorsal rays, 26 ; anal 

 rays, 25 ; length, 60 inches. 



"A very rare fish, that occasionally is met with on our coast, 

 and in Delaware Bay." 



Family XIPHIID^. 



Swordfishes. 



Large fishes, with upper jaw much prolonged to form the "sword ; " 

 teeth small or wanting ; dorsal fin, in adults, in two parts, the anterior 

 the larger ; anal similarly divided ; caudal widely forked ; air-bla<lder 

 and pseudobranchine present ; branchiostegals seven. Young differs 

 from adults in having both jaws prolonged to form a beak, in having 

 dorsal fins high and continuous, and in having spines on head. 



XIPHIAS, L. 

 X. gladius, L. Sword fish. 



Teeth none (except in young) ; ventrals none ; anterior dorsal 

 above gill openings, high and falcate, the second small and above 

 the second anal ; skin naked (rudimentary scales in young) ; 

 pelvic arch obsolete; color dark blue above, dusky below; 

 " sword " nearly black above. Dorsal rays, 40 + 4 ; anal rays, 

 18 -|- 14 ; vertebrte, 14 + 12. Often attain a large size, and are 

 valuable for food. 



" On the coast of New Jersey this interesting s}>ecies is not 

 abundant ever, although more numerous during some years than 



