28 MR. ST. GEORGE MIVART ON THE 
The number of vertebre in the different species appears to be as follows :— 




galeatus. australis. bennettii. 
Gervicallsvertebrie! jij. cles cm sauts oto eat 15 16 14 
ll Garvicoldorsall .sccks stati cae an ete oes 4 3 4 
Cervical and cervico-dorsal together .........- 19 19 18 
Dorsalling stot chracvs ietoie Pea ieionee ee ua erat: 5 5 5 
Dorsoclumbar ernieanic semen ieee Rr easee 2 3 2 
Vertebree of first four categories together ...... 26 27 25 
ifr) aeeeeeine ac scyars cru conaodan ccs 10 9 9 
Sacral chs ciee costes ole eoetobor cic weinteietiene tanelle eleues = 3 3 3 
Sacro=cardall se cerets craton telaneaeney oereuenetener ent 11 10 9 or 10 
Gaudal. i42. Aisne cn tenes ieee let ais 9 8 9 
Sacro-caudal and caudal together.............. 20 18 18 or 19 
Motels. fey stares cover Hoe (eens eee casenelieyaretars 59 57 55 or 56 | 





THE CERVICAL VERTEBR. 
ATLAS AND AXIS OF CASSOWARY (natural size). 
Fig. 23. Fig. 24. 

Fig. 23. Preaxial view of atlas. Fig. 24. Lateral view of axis. Letters as in figs, 3 & 4, p. 3. 
The atlas (fig. 23) is very like that of Dromeus, but has no lateral spicula. The 
dorsal median notch may become a foramen, as in the specimen figured. 
The aais (fig: 24) is also like that of Dromeus, but a little shorter still. The hyper- 
apophysis is longer, especially in C. bennettit. 
The third vertebra differs from that of Dromeus in that it is shorter axially, and 
that the styloid rib is much shorter and only about as long as that of Rhea. There 
may or may not be a perforation in the interzygapophysial ridge. There is a hyper- 
apophysial keel. 
The fowrth vertebra is shorter than that of Dromeus, with a higher neural spine 
and a shorter and stouter styloid rib. 
