ORDOVICIAN SYSTEM : UPPER NAUNGKANGYI STAGE. 37 



P. Ampyx sp. noy. 



P. Phacups (Pterygometopw) sp. (aff. alifrom Salter) 



P. Harpes sp. 



P. Agnostus sp. nov. 



P. Primitia sp. 



Hwe-mawng Fossils (Eastern Area). 



Bryozoa : — 



P. Ptilodictya (?) sp. 

 Brachiopoda 



P. Christiania tenutcincta (?) McCoy 



P. Strophomena af£. corrugatella Dav. 



P. Otthis (Dalmamlla) sp. 



P. Plectambnnites (?) sp. 

 Mollusca : — 



P. Lamellibrancb (gen. indet v 



P. Straparolhis (?) sp. 



P. Large gastrogod (gen. iodet.) 



P. Hyolithes sp. 



P. Belhrcphon (Sinuitcs) sp. 

 Arthropoda : — 



P. Asaphus (Ptychopyge) sp. No. 1 (aff. Lawroivi Schm.) 

 ,, ,, sp. nov. No. 2 



P. Ampijx sp. 



P. Dionide (?) sp. 



P. Phacups (Pterygometopus) sp. nov. (aff. Pander i Schm.) 

 P. Illcenus sp. 



P. Calymene aff. duplicata Murch. 

 Pliomera ingsangensis Reed 



Although the collection made from these beds is not as large as it 

 _ , . „ . might have been, on account of the fragmen- 



Profusion of organisms. , . . 



tarv slate, ol most ol I he specimens met With, the 



number of individual organisms that flourished hi the seas of this 



period must have been extraordinary. It is seldom that one breaks 



open even a small piece of the rock without exposing at least the 



stem joint of a crinoid or cystidean, and detached plates of the 



calices of the latter are almost as common. The ornamental ion 



of the plates and the minutest details of the pore-rhombs, etc., aie 



