310 Eoynl Society : — 



being white on the front edge of the thighs, by which both are 

 distinguished from Hiiamela leucotis ; so I am inclined to believe 

 that the animal which Gay and Gervais described is probably 

 a young specimen in the winter fur of that species, and certainly 

 not Huamela leucotis. 



We only know Cervus antisiensis of D'Orbigny from his 

 figure, which is very different (especially by the pale throat 

 and chest and by its horns) from Xenelap/ms and Huamela. 

 Unfortunately D'Orbigny does not figure the skull. 



The skull which we received from the Zoological Society as 

 the skull of this species has slightly developed and deformed 

 horns ; and if it is rightly determined (I do not know any other 

 deer it can be referred to), it has a very much smaller and slighter 

 impression for the tear-gland than the other two species, and 

 therefore it is probably distinct ; but it would be very desirable 

 to obtain other specimens. 



PROCEEDINGS OF LEARNED SOCIETIES. 

 ROYAL SOCIETY. 



Feb. 20, 1873. — Rear-Admiral Richards, C.B., Vice-President iii 



the Chair. 



"On the Anatomy and Histology of the Land-Planarians of 

 Ceylou, with some Account of their Habits, and a Description 

 of two new Species, and with Notes on the Anatomy of some 

 European Aquatic Species." By H. N. Moseley, M.A., Exeter 

 College, Oxford. 



The writer commences by expressing his great obhgations to 

 Professor Rolleston, whose pupil he formerly was. Professor 

 Rolleston first informed him of the existence of Land-Planarians 

 in Ceylon, and of the importance of investigating them. The 

 paper was at first intended to be a joint one ; and Professor 

 Rolleston himself made a number of preparations of Rhynchodemus, 

 one of wliich is figured. He likewise rendered great aid in the 

 bibliography, and by constant suggestions and assistance during 

 the progress of the work. 



Two new species of Land-Planarians from Ceylon are described : 

 — one belonging to the genus Bipalium (Stimpson), B. Geres ; the 

 other to that of Rhynchodemus, R. Thwaitesii, so called after Mr. 

 G. H. K. Thwaites, F.R.S., the illustrious curator of the Peradeniya 

 Gardens, by whose assistance the specimens made use of were 

 procured. 



Lists are given of all the known species of Bijxdium and Rhyncho- 

 demus, and also a map to show the distribution of Bipaliatn in space. 



