242 ON THE UROSTYLE OF THE ANUROUS AMPHIBIA. 



time, I was unable to obtain specimens of other locally occurring 

 species of Anura, except a single specimen of Bufo melanostictus. 

 Subsequently, just as I was leaving India, however, I received 

 other specimens of Bufo melanostictus (2) from Professor Wood- 

 land of Allahabad, and of Bufo melanostictus (4) and B. ander- 

 soni (2) from Professor Youngman of Lucknow. From London, 

 Mr. Biddolph sent me the hinder parts of the vertebral column 

 of liana esculenta (2), li. temporaria (2), and Bufo vulgaris (1). 



I have also examined a number of skeletons of the two latter 

 species since my return to England. 



In every case a careful examination of the urostyle showed 

 that the condition of the neural canal was precisely similar to 

 that described above as obtaining in R. tigrina. In the case of 

 certain of the smaller specimens (e. g. li. temporaria?), the aper- 

 ture through which the filum terminale emerged from the tubular 

 part of the neural canal is extremely fine, and the succeeding 

 dorsal furrow is represented by a very narrow crevice. In 

 several cases, although the opening could be made out, it was 

 too fine even for the passage of a hair. 



I have sectioned also the decalcified urostyle of a single speci- 

 men of Hyla arborea. The sections establish indubitably that, 

 in this specimen also, the filum terminale extends on to the 

 dorsal surface of the urostyle, upon which it lies altogether 

 uncovered by bone, exactly as in the similar sections of li. tempo- 

 raria and B. tigrina. 



There can be, I think, no doubt, therefore, but that this con- 

 dition of the urostyle and filum terminale will prove to be normal 

 for the Anura generally. 



