376 MR. G. C. ROBSON ON LAND AND 



anatomical knowledge we have to point out that the characters of the shell 

 approximate it to the very characteristic genus Taphrosjjira, which is confined 

 to India, Burma, and the Andaman Islands. If the conchological evidence 

 is supported by the anatomical (the animal itself was unfortunately not 

 found), the relationship thus established will be even more satisfactory 

 than the occurrence in Madagascar of the characteristic Kaliella harrak- 

 porensis and K. sigurensis of India, for in the latter instances it is impossible 

 to assert with any certainty that the two species in question were not intro- 

 duced by human ngency. Again, the genus Kalidos recently proposed by 

 Gude (Proc. Malac. Soc. vol. ix. p. 269), and now reinforced by another 

 species here described, appears to constitute a further link with the East. 

 The affinities of this genus are doubtful. They may be with the A'^sto-forms, 

 which have a wide distribution in the Malay Archipelago and farther east 

 as far as the Solomon and Admiralty Islands. But ('ol. Godwin-Austen 

 informs the author that he suspects its affinities possibly are with the 

 South Indian AriojJianta. 



Finally, we may direct attention to a fact that does not appear to have 

 been commented on before. It would a^ipear that it is with the South Indian, 

 Singhalese, and possibly Malaysian forms, rather than with the North Indian 

 fauna, that the Malagasy fauna has to be compared. 



The following is an analysis of the eighteen genera comprised in the 

 collection of Messrs. Methuen and de la Bathie : — 



A. Peculiar to Madagascar. 



3Ielanatria. 



Helicophanta (with nearest allied genera in the Oriental Region). 



Ampelita. 



Clavator. 



Kalidos (with nearest allied genera in the Oriental Region). 



Batliia (allied to the Oriental Taplirospira). 



B. Common to Madagascar and the Oriental Region. 



Hemiplecta {y. Appendix). 

 Rliysota. 



C. Common to Madagascar and the Oriental Region and found sparsely 

 in Africa. 



D. Common to Madagascar and Africa. 



Cleop)atra. 

 Urocyclus. 

 ( Tropidopliora) . 



The rest of the enumerated genera are cosmopolitan. 



