NORIC AND RHAETIC. 
97 
a. Horizon of Joannites thammensis. 
b. „ „ Jonnnileft r.ymhiformis. 
c. Bracliiopod layer of the Cirey lieds. 
d. Main layer of Tropite.i s%ihhvllatvx. 
e. ,, ,, Monolhi mlimnia. 
A. V. Krafft describes a sequence, which he observed near Lilang. as 
follows : — 
6. Yellow-weathering, shaly limestones and shales with Spirijerina 
Griesbachi Bittn. 
5. Brown sandstones, alternating with grey sandy shales, rieh in 
Lmnellihranchiata (chiefly Monofis salinaria Schloth). 
4. Black, splintery limestone. 
3. Brown, flaggy sandstones, with partings of sandy shales. 
2. Grey, hard limestone, with calcite veins. 
1. Brown, flaggy sandstones. 
It is chiefly the group No. 5, which has yielded a considerable number 
of fossils, among them Monotis salinaria Schloth. 
Together with this characteristic bivalve, the following species of 
Brachiopoda, Lamellibranchiata, and Cephalopoda were collected in the 
"Monotis beds" by A. v. Krafft :— 
Spiriferina Griesbachi Bittn, 
Spirigera Dieneri Bittn. 
Aulacothyris joharensis Bittn. 
Rhynchonella bambanagensis Bittn. 
Anodontophora Griesbachi Bittn. 
Pecten margariticostatus Dien. 
„ sp. ind. aff. Massolongi Stcpp. 
,, sp. ind. aff. monilifero Muenst. 
Lima cf. serraticosta Bittn. 
Pleuromya himaica Dien. 
Trachypleuraspidites nov. sp. ind. aff. Griffithi Dien. 
Immediately above the Monotis beds a series of white and brown 
quartzites occurs, which has a thickness of about 300 feet. This charac- 
teristic " Quartzite series " forms a most conspicuous horizon throughout 
Spiti and in the scenery is often distinguishable at great distances by 
the whiteness of the quartzite bands. 
B ( 29S ) 
