256 'I'llo.MAS DWKill'l' OX 



cera. It is mucli to be regretted that the first ribs liail been cut ii little bevoiul the tu- 

 bercles, and that the spine was not nu'asured when tVesh. It is to be noted that on the left 

 (the side in which tjjc atlas is most free) the l^'ith vertebra is more sacralized, and that on 

 the right (where the arch of the atlas is neai-ly absorbed into the occiput) the l2")th is 

 more nt'arly a noiaiial last lumbar, thus showing an effort to keep the normal niunl)er of 

 praesacral vertebrae on eacii side. Fni'ther on thi' left the costal element of the 20th 

 \ei'tebra is more like a lumbal' traiissfrse pi-ocess, while on the right it is more like a rib, 

 thus showing an effort to kee[) the normal nuinijer of five lumbar vertebrae. The great 

 length of the penultimate ribs is characteristic of a sjiiuc with aborted last ones. 



361. Cat. 037'l-17. 



Female, white. C. 7, T. 12 (13). L. 6 (5), S. -5 (?), C. imperfect. 



In some respectts like tlu' last, Init an unsatisfactory specimen. There is nothing 

 noteworthy in the neck or back. What is left of the 12th ribs, which have been cut, 

 is perhaps r;itlier unusually large, and placed a little high on the vertebra. The trans- 

 verse processes of the 2(lth \ertebra ai'e \ery rudimentary and suggest that a small costal 

 element has been lost. The change in the articular processes is below the IDth vertebra, 

 and the spine of the 2()th is exceptionally like a lumbar one. The spread of the lumbar 

 transverse processes is greatest at the 22(1 and 23d. The 25th vertebra is sacralized on 

 both sides, most so on the left, but apparently forms at most but a very little of the auricular 

 surface, and on the right none at all. On both sides the lateral masses join those of the 

 sacrum. On the right the line of junction is very plain ; on the left the fusion is nearly 

 complete. The promontory is \'ei'y well detined below the 25th. From the front the 

 sacrum appears normal, except that the coiijiif/dfa rcra is in the 4th piece; but from 

 behind the 5th piece looks \-ery nuich like a fused 1st coccygeal. There is but one 

 detached coccygeal vertebra, the I'est being lost. This one is nearly as large as it should 

 be, but does not show the characteristic shape of a 1st one. 



There is a general irregularity in this spine Ijelow the 19th vertelna. The condition 

 might be well exi)lained by Hosenbcrg's theory. 



X. Cat. 113711-13. 



Male, white. C. 7, T. 13, L. 5, S. 4, C. 4. 



The spine is a very long one. It is remarkable for the asymmetry shown in various 

 parts, which almost calls for a different notation for the two sides. The 13th pair of ribs 



