home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Audubon's Mammals
/
MAMMALS1_3.BIN
/
dp
/
0006
/
00066.txt
< prev
next >
Wrap
Text File
|
1992-08-25
|
2KB
|
47 lines
$Unique_ID{QAD00066}
$Pretitle{}
$Title{Genus Castor.--Linn.}
$Subject{Genus Castor.-- Linn.; Castor; }
$Journal{Quadrupeds of North America: Volume I}
$Volume{Vol. 1:347}
$Genus{Castor}
$Species{}
$Common_Name{}
$Log{}
Portions copyright (c) Creative Multimedia Corp., 1990-91, 1992
A U D U B O N ' S M A M M A L S
By John James Audubon, F. R. S., &c. &c.
AND
The Rev. John Bachman, D. D., &c. &c.
-------------------------------------------
VOL. I.
--------------------------------
GENUS CASTOR.--LINN.
DENTAL FORMULA.
2 0-0 4-4
Incisive -; Canine ---; Molar --- = 20.
2 0-0 4-4
Incisors very strong. In the upper jaw their anterior surface is flat and
their posterior surface angular. The molars differ slightly from each other in
size, and have one internal and three external grooves. In the lower jaw the
incisors present the same appearance as those of the upper; but are smaller. In
the molars there are three grooves on the inner side, with one on the external.
Eyes, small; ears, short and round; five toes on each foot. On the
forefeet the toes are short and close; on the hind-feet long and palmated.
Tail, large, flat and scaly. Mammae, four, pectoral: a pouch near the root of
the tail, in which an unctuous matter is secreted.
There is but one well established species known to belong to this genus.
The generic name is derived from the Latin word Castor, a beaver.