92 LA TOUCHE : GEOLOGY OE NORTHERN SHAN STATES. 



have been made from them at various places, namely : — At Liiu ; 



on the path from this village to Man-Ping (Loc. 102, F 1), which 



runs almost entirely over them ; at Ta-pangtawng ferry (Loc. 101, 



F 1) ; on the spurs above this village, near Ngai-tao and between 



the latter place and Man-ngai (Loc. 100, F 1). The fossils collected 



from these localities have not yet been worked out in detail, but 



according to Mr. Cowpcr Reed's provisional list those from near 



Lilu j include an Asaphus allied to A. (Ptychopyge) radiatus Salter, 



a Caradoc form ; species of Illcenus, Cheirurus, Lichas, Bronteopsis, 



and Ampyx, all well-known Caradoc or Llandeilo genera, as well 



as the two new species Pliomera ingsangensis and Calymene bir- 



manica already described by Mr. Reed in his Memoir, and a species 



of Primitia. The brachiopoda found here include species of Sceni- 



dium, Plectambonites, and Orthis, while Hyolithes is very common. 



Further up the valley too, near Man-ngai and at Ta-pangtawng, 



a similar collection was made, including, at the former locality, a 



Phacops allied to P. (Pterygometopus) alifrons Salter, another Caradoc 



T . . form, and a species of Harpes at Ta-pang- 



Liniestone bands. . , , , . f , , r t> 



tawng. Along the river bed above Lilu 



strong bands of limestone are found, apparently intercalated among 



the shales. These, however, are probably only lenticular masses 



with a quite local development. They do not appear on the west 



side of the river, and are absent in the section on the Nam-pang- 



yun below Bawdwin, beyond the limits of the map. 



Upper Naungkangyi Stage (Eastern Area). 

 Purple beds of Hwe-Mawng. 



In all the outcrops of the upper Naungkangyi beds exposed to 

 the east of the Gokteik gorge, there occurs at the 



Purple shale band. . , . , , p , . , 



top oi them a narrow band of dark purple 

 shales, already alluded to on page 85, often so calcareous as to 

 become an impure argillaceous limestone. When this is the case 

 the rock has an almost schistose appearance, so much so that it 

 has actually been described as a micaceous schist, the calcareous 

 matter occurring in the form of lenticular "eyes," resembling the 

 drawn-out crystals of felspar in an 'augen ' gneiss. The more 

 argillaceous portions of the rock are highly fossiliferous, containing 

 large casts of fragments of crinoid stems, cystidean plates, etc., 

 but except a few trilobites, and those not well preserved, no deter- 

 minable fossils have been collected from this band. It has not been 



i 



