SILURIAN SYSTEM : LOWER NAMHSIM STAGE. 



by Mr. Cowper Reed as coming from the Namhsim formation, and 

 it will therefore be convenient to include it as an upper division 

 of that group. 



The fossils from the lower division of the Namhsim formation, 

 ^ ,j or Namhsim Sandstones, are the following, as 



determined by Mr. Cowper Reed (Pal. Indica, 

 N. S., Vol. II, Mem. No. 3, p. 90, seq.). New species are printed in 

 heavier type. 



Brachiopoda — ■ 



Mimulus annglokensis Reed. 



Orthis sp. 

 Mollusca — 1 



Orthonota (?) spectabilis Reed, 

 sp. 



Pycnomphalus sp. 



OrtJioceras aff. tenuiannulatum McCoy. 

 Arthropoda — 



Illcenus aff. cem,idus Salter. 

 Proetus sp. a. 



„ sp. /3. 

 Encrinurus konghsaensis Reed. 

 Calymene Blumenbachi Brongniart. 

 Cheirurus cf . bimucronatus Murchison. 



(?) inexpectans Reed. 

 Phacops (Dalmanites) longicaudatus Murch. var. nov. orientalis 

 Reed. 



This list is not a long one, but although Severn 1 new localities 

 for fossils have been discovered anions these 



Litnological characters. ... to 



rocks since it was compiled, the number of 

 species has not been increased ; it is sufficient, however, to enable the 

 age of the formation to be determined. As the whole of the beds 

 are of a sandy nature, sometimes very coarse in texture, and 

 elsewhere fine grained and compact, hard and splintery, it is not 

 to be expected that they would be very prolific in organic remains. 

 Still, in a few places, where softer fine-grained layers occur, the 

 number of individual specimens that may be collected is consider- 

 able. As a rule, the fossils are found only in loose blockb, 

 either weathered out on the surface of the hill slopes or in the 

 beds of streams ; and as there are no quarries, and suoh cliff 



K 2 



