REPORT ON THE BONES OF THE HUMAN SKELETON. 
61 
lumbar vertebra. In the West Victoria Australian skeleton tlie supernumerary vertebra 
bad a small articular facet on the side of tbe right pedicle, for the head of a supplementary 
rib, but none on the left side. The transverse processes were stunted as in the 12th 
dorsal, and there was a distinct mammillary process. The spinous process was like that 
of the 12th dorsal but somewhat larger; both the upper and lower articular processes 
were like those of a lumbar vertebra. In the female Esquimaux the additional vertebra 
had a relatively large facet for the head of a rib on the left pedicle, and a smaller facet 
on the right pedicle. The transverse processes were stunted, and there were large 
mammillary and rudimentary accessory tubercles. The spine was transitional in shape 
IX. 
x. 
XI. 
Fig. 1. — Anterior surface of the bodies of the 9th, 10th and 11th dorsal vertebrfe ot a Maori skeleton, to show the 
imperfect development of the body of the 10th dorsal. 
betweeWthose of the 1 2th dorsal and 1st lumbar; the superior and inferior articular 
processes had the lumbar character. 
A most remarkable anomaly in the development of the dorsal vertebrae occurred in 
the Maori skeleton from Otago (fig. 1). The 10th dorsal vertebra showed a great defect 
in the ossification of the body, which was divided by a mesial cleft into two lateral 
parts, the right of which was somewhat bigger than the left. Ihe cleft passed irom the 
anterior surface through the body to the spinal canal, also from the upper to the lower 
surface, and was 1 8 mm. wide in front and only 2 mm. wide behind. Each part of the bod} 
consisted of a wedge-shaped bar of bone, sloping both from without inwards and fiom 
