264 THOMAS DWIGIIT ()\ 



of the thorax are practically normal, as is also the liiiiiljar region. It seems dithcnlt 

 under the circumstances to account for tlie extra vertelirn otherwise than hy an irregu- 

 larity of segmentation in tlie thoracic legion. 



0(14. Cat. !i;]71l-lO. 



Male, white, aet. OS. C. 7. '['. 1:;, L. O, (S. 0? ), ('. imperfect. 



In many respects this spine is like the hist. The iLlth rihs. which have not been cut, 

 are very long. The right one is 17.7 cm. folhiwing tlie curve, and the left Ki.o cm. The 

 right loth rib measures o.-3 cm., and the left S.l). The latter is a perfect rib. but tiie right 

 one is narrow and nearly straight. The articular processes change below the I'.lth vertebra. 

 The .spine of the 2()th is lumbar. The spi'cad of the tiansverse processes of the loins 

 increases to the od on the left, though the difference is slight. On the right the 2d is 

 rather more prominent than its neighboi-s. The lateral masses of tlie sacrum rise to near 

 the transverse process of the -"ith lumbal'. The coccy.x is imperfect. The sacrinn on the 

 left is clearl}' of six pieces, there being five foramina. On the right the fifth foramen is 

 imperfect. The 3d sacral shows strikingly the change of direction. The coccj'x is 

 broken ; what there is of it. one or two pieces, is fused with the .sacrum. The spine is by 

 no means so normal in its almormality as the last. There are more transitional peculiari- 

 ties at the junction of all the regions except the cervical. 



A-fS(l. Cat. '.J::i7'.»-4b. 



Male. C. 7. T. lo. L. o. S. ■), C. (4 ?) . 



This is an old, distoi'ted siiiiie, w ith main exostoses on the front, cf)miectiuo- neish- 

 boring vertebrae. In most respects it is like the preceding ones, but a shabby specimen. 

 The penultimate rib is long. The Kith ribs measui'e about li cm. and are certainly ribs. 

 The change in the arti<'ular processes is below the "iOtli vertebra, the spine of which is 

 lumbar. The 1st rifi encroaches on the body of tlie last cervical. The bodies of the 2d 

 and '■)(! thoracics are fused without exostoses, Ijut it is probably patliological. The ;id 

 lumbar has the greatest spread of the transverse processes, but those of the 4th lumbar 

 are not typical. The lateral masses of the 1st sacral rise nearly to tlie transverse pro- 

 cesses. The 3(1 sacral probably forms a minute part of the auricular surface. There is 

 something of a transverse groove across its body. That of the 1st coccygeal is fused with 

 the oth sacral. The other cocc\'i;'eal xcrtebrae are united, but their nuinl)er is uncertain. 



