72 BihliograpMcal Notices. 



styled). The following table indicates to some extent the geological 

 distribution of these 17 species : — 



1. Orbitolites macropora, Defr. 



2. Orbit(jide8 socialis, Leym. ... 



3. Cyclolites regularis, Leym. 



4. Pyrina ataxensis, Cutteau ... 

 >. Hemipnoustes pyrenaicus, Hehert 



Le 



6. Hemipneustes Leymeriei, Hehert 



7. Ostrea acutirostris, iVz/ssoM *t 



8. Ostrea pectinata, Lamarck «t 



9. Ostrea ungulata, Schloth ^ 



10. Gryphfca vesicularis, Lamarck ^ 



1 1 . Excgyra pyreiiaica, Leym * 



12. Spondyliis santoniensis, d'Orh #i-? 



13. Vola quadricostata, Sow * 



14. Pecten Dujardini, Roemer ^fi- 



15. Trocbus Lartetianus, Leym * 



16. Nerita pontica, rf'^rcA *t? 



17. Nautilus sublajvigatus, d'Oib. (N. Labechi, d'Arch. 4' Haime) *'• ? 



The species marked ^ belong to the Aturian or Upper Seuonian Series ; 

 and those marked t to the Emsclierian or Lower Senouian Series also. 



It is suggested by the author, with some reserve, that there is 

 good evidence of the Cardita Beaumonti beds belonging to a higher 

 position in the Cretaceous series than Hemipneustes beds ; and he 

 thinks that the above list unquestionably shows that the Ilemi- 

 jmeustes beds of Baluchistan are of Senonian yge, representing tlic 

 upper part (or etage Aturien) of that formation, and most probably 

 homotaxial with the ctage Maestrichtien of the French authors. 



As to the relationship of the Hemipneustes beds to those of similar 

 age in other parts of the world, Dr. Noctling finds it difficult to 

 define. In Southern India only six species seem to be common to 

 Baluchistan and Ariyahir in Southern India, namely Nos. 7, 8, 9, 10, 

 and 13, together with VolutilitJies latisepta, Stoliczka. 



" The Upper Cretaceous beds of Asia Minor share only a few 

 species with the Hemipneustes beds. The fauna of the Upper 

 Cretaceous beds of the south-western corner of France bears a strong 

 resemblance to that of the Hemipneustes beds of Baluchisttiu. 

 Except such ubiquitous forms as Vola quadricostata, &c., the following 

 species are common both to the Maestrichtian of south-western 

 France and the Hemipneustes beds of Baluchistiin : — 



Orbitolites macropora, Dcfi 



Orbitoidcs socialis, Leym. 



Cyclolites regularis, Leym. 



Hemipneustes Leymeriei, Ileh. 

 Exogyra pyreiiaica, Leym. 

 Trochus Lartetianus, Leym. 

 Nerita pontica, d'Arch. 



Pyrina ataxensis, Cott. 

 Hemipneustes pyrenaicus, Hih. 



"And probably also 



Nautilus sublrevigatus, d'Arch. 



" It is certainly higlily remarkable that, even if we exclude the 

 first and last two species, as occurring elsewhere in similar strata, 

 there are certainly six species which have hitherto only been ob- 



