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Acad animal anteriorly appear Arvicola Ascomys average Bach base basi-occipital bone borealis bulbivorus bulla bursarius castanops characters cheek-pouches clusius color Columbia River Compiled from Richardson Coues curve decidedly described Diplostoma douglasi dusky ELLIOTT COUES foramen magnum fore claws fore feet fossorial fulvus furrow Gcomys genera genus Geomyida Geomys and Thomomys Geomys bursarius gopher gray hairs hairy head and body hind feet hispidus inches incisors inner LeConte less longest Mamm marginal groove mastoid maxillary mexicanus molars mouth mouth-parts nearly Northern Interior nose orifice P. R. R. Rep pairs palate parietals peculiar pelage Phila plumbeous pouches Proc Pseudostoma pure compilation Rafinesque Rich ridge root rufescens Saccophorus sacs salamander shorter side skin skull species of Geomys specimens squamosal suture synonymy tail and feet talpoides taxidermy teeth temporal bone THOMOMYS TALPOIDES umbrinus upper incisors usually Wagn Zool zygomata zygomatic plate
Page 218 - Geomyida!, on the other hand, are hamster-like, or rather an exaggeration of that kind of structure; they are among the heaviest for their inches of any animals of this country, of squat, bunchy shape, with short, thick limbs, a short tail, very small or rudimentary ears, small eyes, no appreciable neck, and thick, blunt head; and they are as completely subterranean as the mole itself.
Page 282 - Dr. Goode kept a number in confinement for several weeks and was thus enabled to make the following interesting observations on their habits. He says: They may easily be confined in a wooden box, with sides 8 or 10 inches high, having dry sand 2 or 3 inches deep on the bottom. No cover is necessary ; I have never seen one look up from the earth, and have rarely known them to attempt to escape.
Page 283 - They dig by grubbing with the nose and a rapid shoveling with the long, curved fore paws, assisted by the pushing of the hind feet, which remove the dirt from beneath the body and propel it back with great power a distance of eight or ten inches. When. a small quantity of earth has accumulated in the rear of the miner, around he whirls, with a vigorous flirt of the tail, and joining fore paws before his nose, he transmutes himself into a sort of wheelbarrow, pushing the dirt before him to a convenient...
Page 220 - ... thought of the brilliant passage in Henry Adams's History of the United States where he says that in the earliest days of the Republic it was a constant miracle to our foreign critics how the newly landed immigrant was changed into a new man by the hopes and ambitions which this country awakened in him. Be the explanation what it may, there is no doubt about the facts. American weavers turn out nearly twice as much work per day as their English competitors, and their wage per piece is absolutely...
Page 283 - ... assisted by the pushing of the hind feet, which removes the earth from beneath the body and propels it back with great power a distance of eight or ten inches. When a small quantity of earth has accumulated in the rear of the miner, around he whirls with a vigorous flirt of the tail and, joining his fore paws before his nose, he transmutes himself into a sort of wheelbarrow pushing the dirt before him to a convenient distance.
Page 236 - GERMAN. DIAGNOSIS. — Superior incisors bisected by a single median furrow (as in G. castanops, which is very different in color). Coloration and general appearance of G. bursarius (which has two distinct grooves on the upper incisors). Fur soft, sleek, as in other species of the genus (excepting G. hispidus, where it is extremely coarse and harsh).
Page 283 - The senses of sight and hearing seem in them to be very dull. An object may be held within a short distance of their eyes without attracting their attention; but the moment one is touched, he turns with a jump, snapping fiercely, much to the detriment of fingers which may be near. If two are confined in the same cage, the one does not seem aware of the presence of the other, unless they accidentally come in contact. Their eyes arc small, dull, and without expression.
Page 284 - No opening is visible, but by digging under the hill a hole is found, the mouth of the adit to the main tunnel, which may be 3 feet below the surface if made in cold weather, but perhaps not more than 6 inches if in summer.
Page 271 - The various intricate relations of the palatals, and of the ''sphenoid" as a whole, are inappreciable in the adult skull. Detailed relations of such of the individual bones as can be made out from the material before me here follow: The nasals reach back to a point opposite the anterior root of the zygoma, but extend little, if any, in the other direction, beyond the intermaxillaries. For two-thirds their extent they are narrow and approximately parallel in the examples of Geomys before me, and then...
Page 283 - They are very pugnacious, and a rough-and-tumble combat between two vigorous males would seem terrific, if their size could be magnified a few diameters in the eye of the spectator. Every muscle of their compact, elastic, stout bodies is brought into action, and they plunge and bite with wonderful ferocity. A battle is usually...