i? REPORT OR NEW JERSEY STATE MUSEUM. 
and while not largely aquatic, it swims well in the water. It 
often occurs in cleared woods and makes long leaps with ease. It 
is a beautiful animal in life, though varies much in the general 
tint of its coloration, sometimes nearly gray, and again others 
are found of nearly reddish-brown. In size I have not found 
it to exceed the pickerel frog. 
Rana sylvatica Harlan, Journ. Acad. Nat. Sci. Phila., V, pt. 2, 
1827, 338.—Harlan, Med. Phys. Res., 1835, pp. 103, 221.— 
Eelbroolk; IN. Am, Herp, 1836, p05, Pleas Cref: inters)m—— 
Holbrook, 1. c., Ed. 2, IV, 1842, p. 99, Pl. 24.—Abbott, Geol. N. 
J., 1868, p. 804.—Abbott, Pop. Sci. Month. XXXIV, 1880, p. 
165.—Sherwood, Proc. Linn. Soc. N. Y., 1897-98, No. 10, p. 23. 
—Stone, Am. Nat., XL, 1906, p. 163. 
Class REPTILIA. 
The Reptiles. 
Limbs, when present, usually adapted for walking or some- 
times for swimming, and embracing a single proximal element, 
2 propodials, several mesopodials, metapodial and phalangeal ele- 
ments. Basicranial axis ossified. Vertebral column consisting 
chiefly of centra. A distinct quadrate bone, or suspensorium of 
the lower jaw. Cerebral hemispheres larger than mesencephalon, 
whose moieties are fully exposed above and not laterally. Cere- 
bellum small. Heart with 3 chambers. Aorta derived from 2 
aorta roots, which consist of 1 or 2 bows on each side. Lungs 
cellular, functional. Gall-bladder, pancreas and fat-bodies pres- 
ent. Reproduction viviparous or ovoviviparous. Fertilization 
internal. Copulatory organs present. Embryo with amnion 
and allantois, and placenta none. 
Cold-blooded air-breathing vertebrates usually scaly or cov- 
ered with bony plates, never with feathers or hair. There is 
an incomplete double circulation of the blood, the septum between 
the 2 ventricles usually wanting or imperfect. ‘There is no meta- 
morphosis after leaving the egg, and the eggs are large and 
