62 
MAMMALIA. 
M. Rafinesque has proposed two other Genera of the Bat 
tribe, namely, Hypexodon and Nycticeius, but he has not yet 
given satisfactory characters of these Genera. 
Genus 32—Atalapha. — Rafinesque. 
Generic Character.-- Without incisory teeth; nose simple; 
ears separate, and provided with auricles; tail long, extending 
beyond the interfemoral membrane, or comprised in it. 
Atalapha Americana .— The New-Your Atalapha. 
Ears broad, short, and rounded; tail encompassed by the in¬ 
terfemoral margin. Inhabits the State of New-York. 
Family II. —Insectivora. 
Four extremities formed for walking ; three kinds of teeth; 
stomach simple and membranous ; intestines short. 
The grinders are furnished with various sharp points ; the 
canine teeth in some species very long, in others short, in which 
case they are termed false cheek teeth, or grinders; the incisory 
teeth varying also, both in number and length; teats ventral, or 
both ventral and pectoral; legs short ; mode of locomotion 
always plantigrade; all the feet pentadactylous, except in one 
species. 
Tribe I. 
With long incisors in front, false canines, not longer than the 
grinders. 
Genus 33. — Erinaceus. — Linnaeus . 
Generic Character. —Incisory teeth canines molars ; 
total 34: the intermediate upper incisory teeth separate, and 
are of a cylindrical shape; the canine teeth are smaller than the 
grinders ; the body is thick, covered with prickles on the back 
and sides, and on the belly with long, stiff', tubulate hairs ; the 
crown of the head high ; muzzle acute; the ears are of a me- 
