OSr THE aENUS ALVEOLITES ETC. 353 



Barma -i 



„ aad Cocliin-China i 



Assam o 



Orissa -i 



Madras, Assam, and Burma j 



Base of Neilgherry hills in Madras 2 



South India and Malabar , ^ i 



„ Ceylon . ; ; • 1 



Ceylon ■ 1 



„ and Java 1 



West coast of India and Malay archipelago 1 



„ » • 6 



„ „ and Coimbatore , 1' 



The foregoing shows that the 78 species are restricted to the 

 ladian region (including Burma and Ceylon) ; 6 are distributed 

 from the Indian region (excluding Ceylon) to the Malay arcH- 

 pelago, and 1 extends from Ceylon to tlie Malay archipelago. 

 Consequently we find no species of Indian freshwater Siluroid 

 extending its range to Africa, whereas 6 do to the Malay archi- 

 pelago. 



Of the genera, as I have already remarked, only 1 is common to 

 India and Africa, whilst that is also found in the Malay archi- 

 pelago, which possesses 10 more Indian genera. 



So far, results would appear to show us that the present race of 

 freshwater fishes of India is much more closely related to a 

 Malayan than it is to an African fish-fauna. 



Notes on the Genus Alveolites, Lamarck, and on some allied 

 Porms of Palaeozoic Corals. By Prof. H. Alleyne Nichol- 

 son, M.D., D.Sc, F.E.S.E., F.L.S.,and Egbert Etheeidge, 

 Jun., F.a.S. 



[Eead May 3, 1877.] 



(Plates XIX. & XX.) 



We have recently had occasion to examine a large series of sp- 

 cimens of that group of corals to which the name of "Alveolites " 

 is generally given, as well as of various allied forms, from the 

 Carboniferous rocks of the north of England and south of Scot- 

 land, the Devonian rocks of Devonshire and North America, and 



30* 



