142 LA TOUCHE : GEOLOGY OF NORTHERN SHAN STATES. 



is at the northern edge of the plateau, a little to the north of Pangyu 

 (Loc. 46, C 3), where they form several low hills just outside the 

 boundary of the Plateau Limestone. The beds here consist of 

 hard, blue, compact limestones weathering into a soft, rotten, sandy 



marl, in which a few fossils were found. 



These included two species of Orthoceras, one 

 of which is indeterminable, and the other is allied to 0. Nichol- 

 ianum Blake, an upper Silurian form, and a single specimen of 

 an Annelid, comparable with Trachyderma squamosa Phillips, from 

 the upper Ludlow beds. 



In the Gokteik gorge the upper Namhsim beds are very poorly 

 Gokteik or e represented, only one small outcrop having 



been discovered, on the cart road leading up 

 from Chaungzon to the plateau on the east side, between the 88th 

 and 89th mile posts; near the village of Pomaw (Loc. 48, D 3). 

 The rock here is a soft, rotten, brown sand rock, probably repre- 

 senting the residue of a decomposed limestone, and the fossils are 

 as usual in a very friable condition. Numerous specimens of a 

 Lindstrcemia, resembling L. (Petraia) suhduplicata McCoy, from the 

 Llandovery beds of the British Isles, were collected here, and a 

 new species of Encpinurus, E. konghsaensis Reed, which has also 

 been found at several other localities in these beds. It occurs 

 further to the north, for instance, at the head of the descent on 

 the path from Makhinsuk to the Nam-Tang at Manna (Manna 1 

 of Mr. Cowper Reed's Memoir, p. 148), (Loc. 49, D 3) with frag- 

 ments of another trilobite, Cheirurus cf. bimucronatus Murchison, a 

 typical Wenlock form. These beds have not been found higher 

 up the Nam-Tang, but in the north-south reach of the river south 

 of Namsaw they are almost certainly cut out by a fault. 



A very richly fossiliferous outcrop of these beds occurs close to 

 the village of Konghsa, in a cutting on the 

 railway about a mile west of Kyaukme sta- 

 tion (Loc. 55, E 2). The rock here is a soft yellow marl, similar 

 to that of Kyinganaing, and the fossils are in the same friable 

 condition, but in much greater variety and very numerous. The 

 collection includes : — Detached rings of crinoid stems, some of large 

 size, and often hardened by an infiltration of iron oxide ; a species 

 of Fencstella, consisting of — 



" A subeircular, slightly crateriform, reticulata expansion .... composed 

 of straight* frequently bifurcating branches which radiate from the central 



