THE MAMMALS OF NEW JERSEY. 45 
Balaenoptera musculus (Linnzus.) 
Great Blue Whale, Sulphurbottom. 
Prater Hic. 2: 
Length, 60 to 70 feet. Head broader and more obtuse than the 
other species of the genus, dorsal fin short, only one per cent. of 
total length. Color, mottled gray throughout. 
This whale, the largest of living animals, has occurred at 
least once on the New Jersey coast, a specimen having been 
stranded at Ocean City on October Ist, 1891, the skeleton of 
which is now in the Museum of the Academy of Natural Sci- 
ences of Philadelphia. It measured 67 feet in length, and is 
described by Prof. E. D. Cope in the Proceedings of the Acad- 
emily, L800, p: 474. 
Balenoptera musculus Cope, Proc. Acad. Nat. Sci. Phila., 
1891, p. 474.—Rhoads, Mam. Pa. and N. J., 1903, p. 13: 
Family PHYSETERID. 
SPERM WHALES. 
These whales are distinguished from the Whalebone Whales 
by the presence of regular teeth in the lower jaw (but none in 
the upper), by the absence of whalebone, and by the high vertical 
forehead. There are two genera: 
a. Teeth large and heavy, 22 to 24 on each side; size of animal very large. 
PHYSETER 
aa. Teeth slender, curved, 4 to 14 on each side; size of animal small. Kocra 
Genus PHysETER Linnzeus. 
Sperm Whales. 
Physeter macrocephalus Linnzus. 
Sperm Whale; Cachalot. 
PLATE 6. 
Length 60 to 80 feet. Head oblong, level with the back above, 
square and truncate in front, forming nearly one-third of the 
