4 Journal of the Asiatic Soc. of Bengal. [N.S., XVIII, 1922.] 
opinion that this piece of bone represents the transverse pro- 
f the third vertebra, which has become directed forwards 
and in its origin corresponds to the other transverse processes. 
When the transverse process of the third vertebra became 
directed forwards, its rib was inflected backwards and for some 
distance lay close to the transverse process. The portion of the 
ossicle marked r* represents this rib. The crescentic portion 
bs the oe (cres.p.) is formed by another element as is shown 
n fig. runs as far forwards as the articular process. 
This new element in the posterior region of the tripus is the 
rib of the fourth vertebra, whose transverse processes have 
been modified to form a platform against which the bladder 
rests anteriorly. 
y views regarding the Bite ee of the Weberian ossicles 
may now be summed up as 
Claustrum = @& suet ss neural arch of first vertebra. 
Scaphium = apart of neural arch of sa 
Intercalarium = _ neural arch of says vertebra 
Tripus = transverse proc and rib of third 
vertebra + rib at fourth ae ra. 
Thus it will be seen that the missing ribs and transverse 
- processes of the third and fourth vertebrae are accounted for. 
The first two vertebrae possess well- ‘developed transverse pro- 
cesses, but apparently their ribs are missing. I suppose that 
either the ribs of these vertebrae have fused with their respec- 
tive transverse a en or that they have been lost altogether 
for want of room, since the processes are greatly enlarged and 
are directed outw ss aia slightly backwards. 
mS Se ee SS a a a ee 

re ‘ eer 
Decal a Mate Can ee ea 
Male ho et Lat BMS ae Cement 



