408 On the Number of Cervical Vertebre in Dinornis. 
and BE) to D. gravis; and the largest (F, H, and I) belong, 
I feel pretty sure, to D. crassus. 
I follow Prof. Owen in regarding the first dorsal vertebra 
as that “ which first retains its pleurapophyses as independent 
movable elements.” 
A. Five vertebre, commencing with the first. The fifth 
has a slight median hypapophysis on the centrum. In 
the fourth it is strong. 
B. Ten vertebre, commencing with the first. The sixth has 
a*very slight preaxial median hypapophysis. In the 
fifth it is well marked ; in the seventh it is absent. 
C. Eleven vertebre, commencing with the second. The fifth 
(no. 4 of the series) has a median hypapophysis ; there 
is none on the sixth. 
D. Seventeen vertebre, commencing with the first. The 
fifth has a median hypapophysis, the sixth none. All 
are cervical vertebre ; and in all both the neural spine 
and the hypapophyses (catapophyses of Mivart) are 
double. The hypapophyses are furthest apart in the 
fifteenth. 
E. Seventeen vertebrae, commencing with the first. The 
fifth has a large median hypapophysis; on the sixth it 
is rudimentary, and absent on the seventh. All are 
cervical ; and in all both the neural spine and the hypa- 
pophyses are double. The hypapophyses are furthest 
apart on the sixteenth. 
F. Nineteen vertebree, commencing with the first. The fifth 
has a slight median hypapophysis ; there is none on 
the sixth. All are cervical. The neural spine is double 
in all. The hypapophyses are double in all, but they 
are nearly confluent in the last. The hypapophyses 
are furthest apart in the sixteenth. 
G. Nineteen vertebre, commencing with the first. The fifth 
has a slight median hypapophysis; there is none on 
the sixth. All the vertebra are cervical. The neural 
spine is double in all. The hypapophyses of the last 
four vertebre are destroyed. 
H. Twenty-two vertebre, commencing with the first. The 
fifth has a well-marked median hypapophysis; there is. 
none on the sixth. The cervical vertebre are twenty- 
one in number. The neural spine becomes single on 
the twentieth; and the hypapophyses become single 
on the nineteenth, but they are almost single on the 
eighteenth. 
I. Twenty-three vertebra, commencing with the fifth. A 
slight median hypapophysis on the fifth (first of the 
