Vol. 67.] FROM THE NEIGHBOURHOOD OF EXETER. 



411 



The cephalopoda, therefore, identified from the Carboniferous 

 rocks in the neighbourhood of Exeter, are : — 



Ammonoidea. 



Dimorphoceras (1 discrepans) . 

 Glyphioceras beyrichianum. 

 Gl. crcnistrki. 

 Gl. davisi. 

 Gl. inconstans. 

 Gl. phillipsi. 

 Gl. reticulatum. 

 Gl. spharicum. 



Glyphioccras spirale. 

 Gl. striolatum. 

 ? Nomismoceras spirorbis. 

 Prolecanites (!) sp. 



Nautiloidea. 



Orthoceras Jconinckianum. 



0. obtusum. 



0. sp. a and 0. sp. j3. 



From the ' Pendleside Group ' Dr. Hind & Mr. Howe l record 

 the following cephalopoda : — 



Ammonoidea. 



Dimorphoceras gilbertsoni. 



D. looneyi. 



Gastrioceras carbonarium. 



G. listeri. 



Glyphioceras bilingue. 



Gl. davisi. 



Gl. diadema. 



Gl. implicatum. 



Gl. nitidum. 



Gl. phillipsi. 



Gl. reticulatum. 



Gl. spirale. 



Gl. stenolobum. 



Glyphioceras vesica. 

 Nomismoceras spirorbis. 

 Prolecanites compressus. 

 Pr. serpentinus. 



Nautiloidea. 



Ephipp ioceras clitellarium. 

 Orthoceras aciculare. 

 0. Iconinckianum. 

 0. stcinhaueri. 

 0. sulcatum. 



Temnocheilus carbon arius. 

 T. concavus. 



and from the underlying Carboniferous Limestone ~ : — 



Ammonoidea. 



Glyphioceras crenistria. 

 Gl. mutabile. 

 Gl. sphmicum. 

 Gl. striatum. 

 Gl. tnmcatum. 

 Nomismoceras rotiforme. 

 N. vittigerum. 

 Prolecanites compressus. 

 P?'onorites cyclolobus. 



Nautiloidea. 



Actinoceras breynii. 

 A. giganteum. 

 Cozlonautilus subsulcatus. 

 Discites discus. 

 D. planotergatus. 

 D. sulcatus. 

 Phacoceras oxystomus. 

 Solenocheilus cyclostoma. 

 S. dorsalis. 



Stroboceras bisulcatum. 

 Temnocheilus coronatus. 

 Thrinoceras hyatti. 



Comparing the list of South Devon forms with that of the fauna 

 of the ' Pendleside Series ' and that of the Carboniferous Limestone 

 as tabulated above, we cannot fail to be impressed with the great 

 resemblance of this fauna to that of the ' Pendleside Series,' a 

 resemblance which is emphasized by the occurrence of such forms 

 as Glyphioceras reticulatum, Gl. davisi, Gl. beyrichianum, and Gl. 

 striolatum (the two last-named having been usually recorded as 



1 Q. J. G-. S. vol. lvii (1901) App. B, table facing p. 402. 



2 Thid. Ann A. t,«hlp. fap.ivior n 40*3 



Ibid. App. A, table facing p. 40 



2f2 



