Title |
Exploration of the Colorado River of the West and Its Tributaries Explored in 1869, 1870, 1871, and 1872, Under the Direction of the Secretary of the Smithsonian Institution |
Subject |
Powell, John Wesley, 1834-1902. Report on the exploration of the Colorado River of the West and its tributaries; Powell, John Wesley, 1834-1902--Travel--Colorado River (Colo.-Mexico); Colorado River (Colo.-Mexico)--Description and travel |
Creator |
Powell, John Wesley, 1834-1902 |
Description |
Pt. 1. History of the explorations of the canyons of the Colorado [May 24-Sept. 20, 1869] Report on a trip to the mouth of the Dirty Devil River [May 27-July 11, 1872] by A.H. Thompson.--pt. 2. On the physical features of the valley of the Colorado.--pt. 3. Zoology: Abstracts of results of a study of the genera Geomys and Thomomys, by Elliott Coues. Addendum A. The cranial and dental characters of Geomydæ, by Elliott Coues. Addendum B. Notes on the salamander of Florida (Geomys Tueza) by G.B. Goode.; 291 pages, 80 unnumbered leaves of plates : illustrations, folded map ; 30 cm |
Publisher |
Digitized by J. Willard Marriott Library, University of Utah |
Contributors |
Goode, G. Brown (George Brown), 1851-1896; Coues, Elliott, 1842-1899; Thompson, A. H. (Almon Harris), 1839-1906 |
Date |
1875 |
Type |
Text |
Format |
application/pdf |
Identifier |
F788-_S65-1875.pdf |
Language |
eng |
Rights Management |
http://rightsstatements.org/vocab/NoC-US/1.0/ |
Holding Institution |
J. Willard Marriott Library, University of Utah |
Source Physical Dimensions |
291 pages, 80 unnumbered leaves of plates : illustrations, folded map; 30 cm |
Scanning Technician |
Ellen Moffatt |
Digitization Specifications |
Original scanned with Hasselblad H2D 39 megapixel digital camera and saved as 600 ppi tiffs. Display images created in Adobe Photoshop Lightroom 5 and generated in Adobe Acrobat ProX as multiple page pdf. |
Call Number |
F788 .S65 1875; Record ID 9914767210102001 |
ARK |
ark:/87278/s6253kj6 |
Setname |
uum_rbc |
ID |
308244 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6253kj6 |
Title |
Page 217 |
OCR Text |
Show OOfJES ON GEOMYS AND TBOMOl\1YS-T. OLUSIUS. 265 of talpoides and its conspecies I know of. The color is equally diagnostic. \Ve miss the peculiar blackish area in which the cars of all other Tlwmorn.IJS are set, aud we fmrl insteacl a blackish snout. The pallid yellowish-gray of' the upper parts is as different from any of the interminable variations of color of other ThomomJJS as thnt of Geomys castanops in comparison with G. bu'rsa' l"tus. rrhe whiteness of the fur to the very roots, on the under parts, is a striking character. The ~pccimen was procured in a region where the true talpoides is also t(mnd in abundance. It Eeems to be the fortune of monographers who have fouurl it neces~ary to reduce vurious species previously established to geographical race or mere synonyms, thnt they should have at the same time new ones of their own to propose. But I see no help for this. N c·w spcc.ies are not, to me, the altogether desirable things they seem to some; and my growing rlislike to find them out keeps pace with my increasing knowledge of our ignorance respecting old species; nevertheless, there is no escape from them at prc~ent, at frequent intervals, and of course the sooner they are ·all indexed binomially the hetter. Having no material for the further elucidation of the character:s of Thomomys clu:.;ius, I may close with the remarl{ that, if the unique specimen is not a pure "sport," it is a perfectly good spec:ies. rrhe name chosen for this species commemorates a peculiar trait of the whole fi.unily Geomyidce-their remarkahle and not genernlly known habit of plugging up the numerous openings of their extensive subterranean tunnels. This name, in connection with ~everal others, completes u sort of epitome of the history of the family. They are underground animal~S (Geomys) that thro'vv up heaps of earth (~mJ-io~, a pile- Thomomys) anrl close the entrances of t.heir excavations (cbtsius); they are mole-like in many respects (talpoides); they are peculiarly providerl with pouches (bursari1ts); and they feed on roots ( bulhivorus) 34 COL |
Format |
application/pdf |
Setname |
uum_rbc |
ID |
308226 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6253kj6/308226 |