150 Hoiianl Fox — Devonian Fossils from 8f. Minver. 



Atrypa reticularis, Linn. A single specimen, well preserved. Cant 



Hill. 

 Atrypa cf. desquamata, Sowerby. Dr. Matley states : " I am 



doubtful, as there are some peculiar ridges in the interior of 



both valves (shown in the internal casts), which I have not 



met with before in this genus." This is the commonest form ; 



ten specimens were obtained, the majority are casts. Cant Hill. 

 Spirifer sp. The nearest species to this seems to be S. cultrijugata, 



Eoemer, but this appears to be quite distinct. Cant Hill, t 

 Spirifer sp., cf. S. speciosa, Schl. A single specimen. Cant Hill. 

 Pentamerus (? Gypidula) brevirosfris, Phill. An internal cast. Cant 



Hill. 

 BhyncJwnella (Gamarotoechia) laticosta, Phill., ? var. There are only 



4 ribs on the fold. An internal cast. Cant Hill. 



Lamellibranchiata. 



Cardiola retrostriata, Von Buch. Pyritised casts. Gravel con- 

 glomerate. South of Pentire Point. 



Pteropoda. 



Styliola sp. Epphaven, Porthilly Cove, west and east of Dinham 



Creek. 

 Conularia subparallela, Sandberger. Cant Hill. 



„ sp., cf. C. deflexicosta, Sandberger. Porthilly, Cant Hill. 



Cephalopoda. 



Described by Mr. G. C. Crick. (See accompanying paper.) 



Orthoceras cf. hercynicum, Kayser. East of Cant Cove. 



„ cf. commutatum, Giebel. Cant Hill. 



5, nassoviense, Foord. East of Dinham Creek, Trewornan. 



,, cf. 0. rapaforme, Roem., and 0. snbconicum, Eoem. East 



of Dinham Creek. 



„ gracile, Blum. Trewornan. 



„ or Bactrites. Conglomerate. Gravel Caverns, south of 



Pentire Point. 

 Bactrites sp. Trewornan. 

 Cophinoceras sp. Cant Hill. 

 Phragmoceras (?) sp. Cant Hill. 

 Tornoceras sp. Conglomerate. Gravel Caverns. 

 Agoniatites sp. Cant Hill. 



Although the specific characters of many of the fossils in the 

 above list cannot be recognized owing to their imperfect preservation, 

 there appears to be sufficient evidence to justify the conclusion that, 

 whilst the Gravel Caverns conglomerate and the slate rocks forming 

 the banks of the north shore of the Camel estuary in the Porthilly 

 and Dinham Creek districts are Upper Devonian, those in the 

 intermediate and more southern region of Cant Hill may be Middle 

 Devonian in age. 



