616 GEOLOGICAL SUEVEY OF NEW JERSEY. 



LAGBNORHYNOHUS, Qr. 



L. acutus, Gr. {perspidllaius.) Skunk Porpoise. Bay Porpoise. 



Beak short, plowshare-like ; body largest forward ; flukes 

 large; color black above, gray laterally, yellow patch on tail 

 and white patch further forward, also irregular dark bapds|; 

 teeth, 35 to 37 ; length, 8 feet. Abundant about Cape Cod. 



PHOC^NA, Cuv. 



communis. Less. (J?, brachyoion.) Harbor Porpoise. Herring Hog. 

 Common Porpoise. 



Jaws equal, size small ; color blackish above, fading to whitish 

 belly, sometimes with yellowish tinge; margin of lower jaw 

 black ; teeth, 26 ; length, 5 feet. 



" This is the abundant species so common not only along the 

 coast, but in the mouths of the rivers. They have been seen in 

 the Delaware as high up as Trenton, and are common in the 

 Hudson north of the New Jersey State line. 



"They frequently are seen sailing along with a slow and 

 measured motion, just appearing at the surface by elevating the 

 crown of the head, and then diving short, so as to make their 

 bodies describe the are of a small circle, exposing themselves to 

 view only from the crown of the head to a short distance behind 

 the dorsal fin. Occasionally a troop of them may be seen scudd- 

 ing along, rising in this manner in quick succession, as if anxious 

 each to get in advance of the other, while again a single indi- 

 vidual may be observed successively rising and falling' in the 

 same way, as if engaged in the act of catching a prey." 



Have been known to kill schools of drumfish. 



GRAMPUS, Gr. 



G. griseus, Cuv. (D. globiooephalus.) Grampus. Cowfish. 



Head globular; lips beak-like; mouth oblique; dorsal fin 

 high; pectorals long and falcate; flukes narrow; above dark 

 gray and variegated, laterally, with yellowish and gray ; whitish 

 belly, with streaks ; no teeth in upper jaw ; length, 10 feet. 



True, in his " Review of the DelphinidEe," Bui. No. S6, U. S. 



