i E ER E PE A E KITA OET a RE a EE ERT PELER ETE o A E OE il a a aa 
Di er a i PESES si a ii em se ee ù AAEE EI Pena EE EE PEA 
Kp E ate a EA aa ae a a a EAE ETS Baa aa aaa E ET, 
1878. ] Anthropology. 125 
of Nebraska, it has followed the overland railroad westward, its 
appearance being noted from time to time in localities along the 
line where it had never before been seen. Gradually it followed 
westward until it reached Battle mountain and Winnemucca, 
on the line of the Central Pacific in Nevada. From these points 
it extended its wanderings northward into Surprise Valley, in 
north-eastern California, and is gradually spreading through the 
valleys extending down from Mount Shasta. Its diffusion over 
the whole State is now believed to be only a question of time and 
reasonable forbearance on the part of gunners.—Sa/inas ( Califor- 
nia) Index—Communicated by R. E. C. Stearns. 
On THE FORM OF THE STAPES IN Dipopomys.—Upon making 
very thin, inflated, hollow internally, with a salient rim jutting 
inwards, and a similar salient horizontal border or rim bounding 
it externally; from this flat rim the grooved crura arose, and 
united distally; an osseous tube giving passage to a vessel and 
nerve traverses the crural opening, as in many other Rodents 
and Insectivora. Looking at the base of the stapedial bone from 
the side above and little oblique it reminds one strongly of a 
minute hat with a rounded crown and narrow rim, while a view 
from the side calls to mind the shape of the carapace of an 
Emys. On making comparisons of my sketches with the re- 
markable collection of preparations of the internal ears of various 
vertebrates made by Professor Hyrtl,and now in the museum 
of the Philadelphia College of Physicians, to which I was very 
indly permitted access through the courtesy of Dr. Bache, I 
_ found that the base of the stapes was similarly inflated with the 
>- Convex surface dipping into the fenestrum, in Hyrax, Mephitis, 
_ Enthizon, and Phalangista—Fohn A. Ryder. 
ANTHROPOLOGY. 
