Gi Proceedings of the Asiatic Society. [Feb. 



an ft j Solarium impressum, Flssurella scrobiculata, Fiss. canalifera, 

 Macrochisma scutiferum. It is to be hoped that figures of all the 

 species can be given to accompany the descriptions. 



All the type-specimens described in the paper were exhibited at the 

 meeting. 



II. Notes on the geology and physical features of the Jaintia hills ; 

 by Captain H. H. Godwin- Austen, F. R, G. S. — communicated by Dr. 

 Stoliczka. (Abstract.) 



The geological formations, noticed in the present contribution, in 

 general correspond with those described by the same author in his 

 paper on the geology of a portion of the Kbasi hills, (printed in the first 

 number of part II, of the Journal, Asiatic Society, Bengal, for this 

 year.) The oldest rocks exposed are metamorphics of great variety 

 and extent ; they are overlain by sandstones which most probably 

 are of cretaceous age, and in some places contain seams of valuable 

 coal. On these sandstones rest locally nummulitic limestones, some- 

 times overlain by a very fossiliferous ferruginous rock of still younger 

 tertiary age. Some of these tertiary deposits appear to be the 

 equivalents of the Sivaliks, so well known through their rich fauna of 

 fossil Vertebrata. Special notice is also given of the Nummulitic coal 

 occurring at Lakadong, which is believed to have been formerly worked. 

 Captain Godwin- Austen expresses the hope, that further investigations 

 may bring to light a much larger geographical distribution of the various 

 coal beds. 



In the Jaintia district proper granites, quartzitic and trap rocks 

 are, however, of greater extent than the other formations. Among 

 the physical features of the ranges are especially noticed the regular 

 forms and equal heights of the various peaks, and the parallelism of 

 the drainage lines. 



Dr. Stoliczka further stated, that there is another interesting 

 paper, by Captain Godwin- Austen, on the list for to-day's meeting ; it 

 treats on some new species of Indian Diplommatince. Since the paper was 

 sent in, the author, however, requested that it may be postponed, wish- 

 ing to add some more species of the same genus, only very lately dis- 

 covered in the Cachar hills. There was no more time to bring Captain 

 Godwin-Austen's request before the Council, but the postponement 

 will no doubt be granted, and he would, therefore, defer the reading 

 of the paper. 



