1920.] 



Miscellanea. 



183 



Messrs. Bangs and Penard also give Sumatra as the type lo- 

 cality of hankiva but Java must be taken, as the specific name is 

 merely a slightly altered Javanese one. It is quite true, however, 

 that the race occurs in Sumatra as well. I have lately seen in the 

 Zoological Museum at Buitenzorg specimens from the south-west 

 of that island though /, ferrugineus is found in the north-east. 



C. BODEN K1.0SS, 



M.B.O.U., C.M.A.O.U. 



Batrachia. 



A short note on the structure of the Compound limb 

 bones of Rana. 



This short note is published with a view to record an observa- 

 tion on the structure of the bone of the common large frog of 

 Lahore (7?a;m ^/gn>/a) that I made sometime ago. Owing to the 

 pressure of other work, net having as yet a chance to elaborate 

 the problem in detail, I wish to bring this observation to the notice 

 of other workers. 



In all accounts of the histological structure of the bone of 

 frogs, the bony substance is described as compact, consisting of 

 very thin lamellae superimposed on one another, and without an}^ 

 Haversian system of canals intersecting or passing through them. 



Transverse section of the tibio-fibula of the frog Rana tigrina, X 16. 



For example, one may refer to the description given in Parker and 

 Parker's '" An elementary course of practical Zoology," pp. 116- 

 117 and 125. 



In one of the sections of the tibio-fibula prepared by me by 

 the ordinary grinding method, however, I found a different state 

 of things. The structure of the outer walls of the two component 

 elements of this bone was similar to that of any other bone of the 

 frog, but in the middle, where the two bones have fused together, 

 one finds instead of the compact structure, a regular system of 

 canals traversing this area as. seen in the figure. Seen with a 



