414 
VEETEBRATA. 
on vegetable substances, and perforates tbe earth witb its burrows, like tbe preceding. It is 
partly nocturnal in its habits, and is found in Chili, where it is called Gururo. It is probably the 
Blue Eat, Mus cmruleus of Molina, and certainly the Bpalacopus Pceppigii of Wagner. 
THE BLACK PEPHAGOMTS. 
Genus SCHIZODON" : Schizodon, — Of this there is one species, the Brown Schizodon, 
fuscus, which has rather a slender body, eight or nine inches long, tail less than half the length 
of the body, color grayish-brown above, and grayish-fawn below. It is found in Chili. 
Cuming's octodon. 
Genus OCTODON or OCTODONTE : Octodon, referred to the Ilystricidce by Waterhouse, 
embraces several species, which derive their generic name of Octodonte^ meaning eight-toothed, 
from the number of the molar teeth, the crowns of those below having at the same time nearly 
the form of the ficjure 8. 
