92 
MAMMALIA. 
bands; white underneath. Inhabits the banks of the rivers 
Yapock and Guyane. 
Genus 3.—Dasyurus. — Geoffroy. 
Generic Character .—Tncisory teeth canines grinders 
total 42. The incisors are small and regular; canines 
large; the two first grinders cutting, the others with points 
on their crowns ; head conical and elongated; fore feet with 
five toes on each, furnished with crooked nails; hind feet with 
four toes and nails; thumb very short, distant from the fingers, 
and without a nail; tail long, covered all over with hairs ; fe¬ 
males with a marsupial pouch. 
Dasyurus macrourus — The Spotted Dasyurus. 
Plate IX. fig-. 9. 
Fur bright chestnut-coloured, irregularly spotted with white; 
hairs on tail long and spotted. Size of a cat. Inhabits New 
Holland. 
Genus 4.—Gymnura. — Raffles. 
Generic Character. —Incisory teeth |, canines 1 y 1 > molars 
total 26. The incisive teeth large, sub-cylindric and remote, 
short and compressed ; upper canines remote, short, and conical; 
the inferior one large, conical, and subarcuated; molars remote, 
with one elongated tubercle ; second molar short; next four 
cuspid, conical, and elongated; lower molars with one tubercle; 
first and second short, third sub-elongated, the fourth tubercu- 
lated and elongated, fifth gradually shortening, and sixth and 
seventh large, with acute tubercles; head elongated, laterally 
compressed; muzzle much produced, the upper jaw being con¬ 
siderably longer than the under; ears round, prominent, and 
naked ; eyes small ; whiskers very long; tongue smooth ; body 
rather robust; tail long, naked, and scaly; feet with five toes, 
furnished with strong hooked nails, which are retractile; the 
three centre toes longer than the others; hind legs very long, 
fore legs short. 
