94 ENGYSTOMA CAROLINENSE. 
exceedingly minute, and but slightly prominent; the pupil is black, the iris very 
dark grey. 
The body is round, somewhat flattened in the living animal, and smooth; dark 
brown along the vertebral line, and chestnut on either side of it; the sides of the 
head and neck below the orbits, and the flanks, are greyish; the throat and 
abdomen lighter, all thickly sprinkled with blackish specks. 
The anterior extremities are chestnut-brown above and _yellowish-brown 
beneath; the fingers are five in number, short, and distinct. The posterior 
extremities are short and thick, chestnut-brown above, with a few dark spots; 
the toes are five in number, short, and not palmated. 
Divensions. Length of body, 1 inch; of thighs, 3 of an inch; of Jeg, $ of an 
mch; of tarsus and toes, ~ of an inch. 
GerocrapuicaL Distrisution. Hitherto this animal has never been found north 
of Charleston; its range extending westward to the Lower Mississippi, where it 
has been observed by Lesueur. 
Hasirs. The Engystoma Carolinense passes most of its days in concealment, 
near old fences, or under the bark of fallen and decaying trees, emerging only 
towards evening and after heavy rains. They are frequently seen with myriads 
of the young of the Bufo lentiginosus, apparently washed from their places of 
concealment by summer showers, which has led many to suppose that they 
descended with the rain. It makes a feeble chirp at night, and at times when 
captured; and being but a clumsy swimmer, if thrown into water it repeats this 
chirp frequently in its endeavours to escape. 
Generat Remarks. This is the only species hitherto observed in the United 
States, and must not be confounded with those of South America. The Engystoma 
ovale is nearly twice the size of our animal, is uniformly dusky on the back, and 
