. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. PELVIS. 159 paneled than the shaft in most of the order. They form with the spine an hngle of" about Fig. Pehis of the Hare, anterior vieiv. 165° in the Hare, and 150° in the Porcupine. In the Copyrus, Rats, Mice, and Guinea-pig, they are nearly parallel with the spine ; but in the Jerboa they cross the spine at an angle much less than in others, being about 140°. In the Jerboa the iliac wings are curved out- wards superiorly and projected much on the dorsum of the spine, reaching beyond the elongated spines of
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. PELVIS. 159 paneled than the shaft in most of the order. They form with the spine an hngle of" about Fig. Pehis of the Hare, anterior vieiv. 165° in the Hare, and 150° in the Porcupine. In the Copyrus, Rats, Mice, and Guinea-pig, they are nearly parallel with the spine ; but in the Jerboa they cross the spine at an angle much less than in others, being about 140°. In the Jerboa the iliac wings are curved out- wards superiorly and projected much on the dorsum of the spine, reaching beyond the elongated spines of the last lumbar vertebra. The ilia of the Beaver, and, in a less degree, in the Hare, are expanded, with prolonged and irregularly curved crests (c), a little everted at the spinous processes (g), and propor- tionally short in the shaft. The ischia in Rodents are generally long, especially in the Beaver and Jerboa. In the latter animal they are directed much outwards, with tuberosities large, much expanded, and everted posteriorly, to give firm attachment to the strong sacro- sciatic ligaments. They are placed in a right line with the ilia, the ilio-ischial angle being wanting as in the Carnivora (sec fig. 112. 8.). In the Hare the tuberosities of the ischia are large, and present well-marked lateral pro- cesses (c\ which are everted, and rise above the level of the coccygeal vertebras. The^wfo's are long and slender, and generally join with the ischia in a long median symphysis projecting in a sharp, anterior, vertical, ridge (/); except in the Porcupines, Rats, and Mice, which have a short symphysis pubis. In the Jerboa there is a slight pubic sjnnous process, very externally placed ; this is better marked in Hares (//), Rabbits, and Beavers. The ilio- pubic angle in Hares and Rabbits is about 120° to 130°. In the Jerboa it is more oblique, H5°; and still more so in Rats and Mice, 150°. The sciatic notch is generally long and nar- row, especially in the Jerboa; and t
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