560 Notices of Memoirs — Dr. Felix Oswald 



contains Waldheimia cuhanica, Tscheru., W. cf. austriaca, Zugm., 

 W. Btikotvski, Bittn., Terehratula pi/riformis, Suess, T. turcica, Bittu., 

 Rhynchonella ohttmfrons, Suess, Spirigera cuhanica, Tschern., Retzia 

 superhescens, Bittn., Amphicliiia squanmla, Bittn., Aulacothyris cf. 

 loharensis, Bittn., Mysidioptera Gremhlichi, Bittn., Pecten suhalterni- 

 costatus, Bittn. 



2. Noric !Stage. — The facies of the Dachstein Limestone with 

 Megalodus sp. of the group Megalodus {Neomegalodon) triqueter, 

 Wulfen, was found on Mt. Yatyrgvait (also in the Kuban district), 

 hut this seemed to be a somewhat isoUited occurrence. The red, 

 compact limestones usually contain a rich coral fauna (not specified) 

 with masses of Pseudomonutis ochotica, var. densistriata. Teller, which 

 the author considers to be synonymous with Ps. [Monotis) salinaria, 

 Bronn. They dip 10° N.W. by N. and are transgressive over 3. 



3. Carnic Stage. — Black, thinlj^-bedded, micaceous slates, inter- 

 bedded with grey sandstones, altogether about 75 metres thick. 

 They contain Koninckina Tdleri, Bittn., and badly preserved Tropites. 

 In the lower horizon of this series, on the eastern slopes of 

 Mt. Tkhach, thick beds of oysters occur. 



4. Ladinian. — (1) Red, quartzitic sandstones, interbedded with 

 black slates and marls, dipping 20° K.N.W., containing the charac- 

 teristic Wen gen fossils Daonella Lommeli, Wissm., and Posidonomya 

 wengensis, Wissm., with siliceous sponges and plant-remains in the 

 upper part. The liest sections occurred in the Sokhra Yalley. 



(2) Conglomerate. 



(3) ' Upper contorted series,' consisting of grey calcareous flag- 

 stones, well developed to tlie south-east of Mt. Tkhach, and 

 containing a Cephalopod fauna (described by Professor Karl Diener). 

 Owing to their poor preservation tlie fossils could only be generically 

 determined as follows : " Ptychites sp ind. of the Jl/egalodiscus group ; 

 gen. ind. sp. ind. of the Pinacoceratidae family, recalling Norites or- 

 Arthaherifes, but the condition of the suture-lines would permit 

 of its being included in Sageceras ; Gymnites sp. ind. aff. incuUus, 

 Beyr. ; IlonophylUtes sp. ind. of tlie group M. Suessi, Mojs., closely 

 resembling 31. Pitamaha, Diener; Monophyllites n.sp. ; gen. ind. sp. 

 ind. of the Ceratitidae family, recalling Celtites or Monophyllites ; 

 this specimen in all probability represents a new species near to 

 Nomismoceras spiratissimum, Holzapfel; Palato7iites sp. ind.; Cera- 

 tites sp. ind. belonging to the group of C. circumplicatiis ; Orthoceras 

 sp. ind." 



(4) ' Lower contorted series.' Much crushed and dislocated, 

 dark siliceous limestones, showing a prevalent dip to north-west. 

 A bed of limestone immediately overlying this strongly contorted 

 series contains characteristic Werfen fossils (Scythian stage), e.g., 

 Coelostylina iverfensis, Witt., Terebratida sp., Gervillia exporrecta, 

 Leps., Pseudo7notiotis vmetiafia, Hauer, P. aff. leptopleura, Witt. This 

 Scythian stage is widely distributed in the north-west Caucasus, 

 e.g. in the valley of the Bielaya River near the confluence with its 

 tributary the Dakh River, in many places in the Sokhra Valley 

 (another tributarv of the Bielaya), on Mt. Shavshin, and on the slopes 

 of Mt. Tkhach. 



