430 Reviews— Tibetan Palceontology. 



of a more complete study of the fauna. A later stage is recognized 

 among the Cretaceous rocks, viz. the Daman, in which is included 

 Velates tibeticus, n.sp., a Gasteropod presenting considerable differences 

 of form from the well-known V. schmideliana of older Eocene times, 

 with which it had been confused by Hayden. A special chapter is 

 devoted to the Orbitoides of the collection, which were recognized 

 as belonging to the Campanian, Maestrichtian, and Danian, full 

 acknowledgment being given to Mr. Vredenburg's important memoir 

 on The Cretaceous Orbitoides of India previously referred to. The 

 Eocene beds, having yielded Alveolina, Orbitolites, etc., are regarded 

 as Eocene inferieur, but older than the Ilanikot Beds of India. The 

 author admits a continuity of deposits from Cretaceous times, a fact 

 suggested by Hayden, who was unable to trace the existence of any 

 unconformity between the Cretaceous and Tertiary — such a conclusion, 

 we think, being also supported by reason of the absence of Nummulites 

 in those rocks. Eor a better appreciation of the entire fauna the 

 following list of its species and those of the Algse, now described and 

 mostly figured, is here appended : — 



Cenomanian : Acanthoceras neivboldi, Kossmat ; Mantelliceras lati- 

 clavium (Sharpe) ; II. discoidale (Kossmat) ; Turrilites costatus, 

 Lamarck; T. iviestii, Sharpe ; T desnoyersi, Orbi»ny. Turonian(?) : 

 Inoceramus sp. ; ? Plicatnla radiola, Lamarck ; Pycnodonta vesiculosa 

 (J. Sowerby). Emscherian : Pycnodonta. Campanian: ActceoneUa . 

 crassa (Dujardin) ; JBournonia haydeni, n.sp.; B. tibetica, n.sp.; 

 iEndocostea haydeni, n.s]).; Limasp. ; Pycnodonta vesicularis (Lamarck). 

 Maestrichtian: Nerinea ganesha, Noetling ; Plagioptychus tibeticus 

 n.sp. ; Plicatula hirsuta, Coquand ; Kinyena heberti (Orbigny) ; 

 Cymopolia tibetica, n.sp. Danian : Nautilus pseudobouchardi, 

 Spengler ; JV. cf. rota, Stoliczka ; Gisortia depressa (J. de C. Sowerby) ; 

 Ovula cf . ellipsoides, Archiac & Haime ; 0. sp. ; Terebellum distortion, 

 Archiac & Haime ; Gosavia salsensis (Archiac & Haime) ; Lyria sp. ; 

 Chenopus tibeticus ; C. (ITippochrene) columbarius (Lamarck ?), Archiac 

 and Haime ; Drepanochilus fusoides (Archiac) ; Campanile cf. breve, 

 H. Douville ; C. brevius, n.sp. ; Natica ci.fletningi, Archiac & Haime ; 

 Velates tibeticus, n.sp. ; Venericardia ; Corbis cf . lamellosa, Lamarck ; 

 Lima squamifera, Goldfuss ; Chama cf. distans, Deshayes ; Spondylus 

 rouaulti, Archiac ; P/elheidia haydeni, n.sp. ; Orbitoides vredenburyi, 

 n.sp. ; 0. media, Archiac ; 0. tenuistriata, Vredenburg ; Lepidorbitoides 

 socialis (Leymerie) ; L. tibetica, n.sp. ; L. polygonalis, n.sp. ; 

 Omphalocyclus macropora (Lamarck) ; Operculina canalis, Archiac ; 

 0. hardiei (Archiac & Haime) ; Siderolites miscella (Archiac & 

 Haime). Eocene : Coniscala tibetica, n.sp. ; Vulsellopsis legumen 

 (Archiac & Haime) ; Liostrea fleming i (Archiac & Haime); Alveolina 

 oblonga, Orbigny ; Orbitolites complanatus. 



We must congratulate Professor Douville on the production of so 

 excellent a work, more especially as we are given to understand that 

 it was difficult of achievement on account of the bad preservation of 

 the fossils. All palaeontologists interested in the geology of this 

 remote and little-known region of Asia will welcome so important 

 and valuable a contribution to the literature of that subject. 



E.B.N. 



