MAMMALIA. 
13* 
56. Diplostoma bulbivorum. 
As we now consider that this genus ought never to have been separated from geomys, and that the latter 
is the preferable generic term, the name of the species ought in future to be geomys bulbivorus. In a 
paper on American Zoology, published in the Report of the British Association for the advancement of 
science, for 1836, 1 have enumerated eight species of geomys which may be grouped by the sculpture of their 
incisors. 
6l( 2 ). Lepus nigricaudatus. Benn. Zool. pr. 1833. p. 41. 
This species inhabits California. 
61( 3 ). Lepus campestris. Bachman. Journ . Acad, of Sc. Phil. vii. 353. 
This species, which is described in the Fauna Boreali- Americana under the appellation of Virginianus, 
being in fact distinct from the Virginianus of Harlan, with which I had confounded it, has been named as 
above by Dr. Bachman. From the observations of Professor Nuttall, it appears to be very common on the 
prairies west of the Rocky Mountains, and especially on the Wallawallah, as well as on the banks of the 
Platte to the eastward. Its flesh is dark-coloured, like that of the European hare, to which it was likened by 
Mr. Drummond. A confusion has crept into the synonyms of the American species of this genus, which the 
Rev. Dr. Bachman has ably laboured to unravel in the paper above quoted. 
61( 4 ). Lepus Nuttallii. Nuttall’s Little Hare. Bach. Op. Cit . p. 345, 
pi. 22. 1. 
This pigmy hare was observed by Professor Nuttall on the banks of several small streams which flow into 
the Shoshonee and Columbia rivers, having habits similar to those of the common American grey rabbit, 
Lepus sylvaticus of Bachman, or Americanus of Harlan and some other naturalists of the United States. 
See Proceedings of the Zoological Society for 1836, page 88, for notices of Lepus longicaudatus, L. 
Californica and L. Douglasii, (Gray), all discovered by the late Mr. Douglas, in North America. The 
recent visit of Dr. Bachman to London will enable him to ascertain how far these are distinct from those 
mentioned in his paper. 
67( 2 ). Cervus ? 
Exclusive of the six deer enumerated in the list as frequenting the north-west coast two others are known 
to the traders on the banks of the Columbia. One of these is called the “jumping deer,” or “ cabree,” and 
must therefore bear some resemblance to the prong-horned antelope, which is also termed cabree, with the 
addition of the distinguishing epithet “ white tailed.” The deer of North America greatly need elucidation. 
Mr. Ogilby has lately described a skin found in the repositories of the Zoological Society mixed with some 
others obtained on Sir John Franklin’s expedition as belonging to a new genus or species which he names 
Ixalus probaton, (vide Zool. pr. 1836, p. 119). The animal in question is perhaps the “jumping cabree” of 
the traders, or one of the other imperfectly described deer of the north-west coast, and the skin was most 
likely presented to the Zoological Society by the Hudson’s Bay Company, though afterwards accidentally 
placed in the same box with Sir John Franklin’s specimens. 
Pteropus pselaphon. 
Having recently had an opportunity of comparing a scull of an old individual of this species with 
Temminck’s figure of that of his Pt. dasymallus, I can perceive no other difference than that the teeth of the 
former are more worn down. 
JOHN RICHARDSON. 
