48 REPORT OF NEW JERSEY STATE MUSEUM/ 



vertebrae of the neck are separate, while in Hypcroodon they are 

 all fused. Color, light stone gray, darker on the belly. Dr. F. 

 W. True records the stranding of a specimen of this whale 

 at Bgrnegat City, October 3d, 1883, an adult female measuring 

 19 feet 4 inches. This is the only record for our Atlantic coast 

 (see Science, 1883, p. 540). 



Ziphius cavirostris True, Science, 1883, p. 540. Rhoads, 

 Mam. Pa. and N. J., 1903, p. 16. 



Genus Me;sopIvOdon Gervais. 



Mesoplodon bidens (Sowerby). 

 Cowfish, Sowerby's Whale. 



Length, 12-16 feet. Similar to the last, but male with a tooth 

 on each side of the lower jaw at about the middle, female tooth- 

 less, skin very smooth, black all over with occasional lighter 

 blotches. A male specimen, twelve and a half feet long, was 

 stranded at Atlantic City, March i8th, 1889, and its skeleton is 

 preserved in the U. S. National Museum. 



Mic ropier on bidens Turner, Proc. Roy. Phys. Soc. Edin., X 

 (1889), p. 13. 



Mesoplodon bidens Rhoads_, Mam. Pa. and N. J., 1903, p. 17. 



Family DELPHINID^. 



Dolphins and Porpoises. 



This family comprises all the smaller cetaceans. All of our 

 species have a dorsal fin, and all except the Grampus have 

 numerous sharp teeth in both jaws. 



The popular name dolphin strictly applies to those species with 

 a projecting snout, while the porpoises have a rounded head 

 without a snout. As is frequently the case, however, the names 

 have become hopelessly misapplied, and the most plentiful 

 dolphin on our coast is usually known as the porpoise. 



The several genera that occur on the New Jersey coast may be 

 distincfuished as follows : 



