ETHEPvIDGE DEYOXIAN EOCKS AND FOSSILS. 607 



In Mr. Yalpy's collection (from these beds) are the following 

 species : — Brachiopoda : Spirifera disjuncta, Sow. ; S. glabra ? S. 

 curvata, Schloth.; /S. nucla, Sow. ; S., sp. ; S. speciosa, Schloth., and 

 var. ; Merista pJeheia, Sow. ; Atrypa reticuIaHs, Linn. ; A. desqua- 

 matojSow. ; A. aspera, Schloth.; Athyris conceiitrica,Y .^\\g]i; Cyr- 

 tina heterodyta, Defr. ; Orthis interlineata, Sow. ; 0. striatula, 

 Schloth. ; Rhynchonella pleurodon. Gasteropoda : Acroculia vetusta^ 

 Sow. ; Euomphalus serpens, Phill. ; E. radiatus, Phill. ; and Natica, 

 sp., with Tentamlites, Conularice, Fenestellce, and Favosites cervi- 

 cornis {polymorpha), Blainv. 



In the limestone quarry at Chambercombe, I observed Cyatho- 

 phyllum coiqntosum, Goldf., Favosites cervicornis, Blainv., Spirifera 

 disjuncta, Sow., casts of Rhynchonella like R. pleurodon, and Fenes- 

 tetla antiqua ? The greater part of the slates and dark compact lime- 

 stone is here fossiliferous, containing especially the ubiquitous coral, 

 Favosites polymorpha or cervicornis, Polyzoa, and casts of Crinoidea. 

 Mr. Yalpy has obtained Streptorhynchus crenistria, Phill,, Euompha- 

 lus radiatus, Phill., Eucrinital remains, and Polyzoa in the beds 

 across and through which the stream passes from Hele to Haggin- 

 ton Beach, near the waterfall. The prevaihng forms found are 

 Rhynchonella pleurodon, Phill., fragments of Spirifera disjuncta, 

 Sow., Strophomena rhomhoidalis, Wahl., and two species of Cypri- 

 cardia, Phill., with Acroculia vetusta. Sow., imperfect and small 

 Orthoceratifes and Theca ? — a series of slates and impure limestones, 

 finely laminated sandstones, blue calcareous sandstones, thick red- 

 dish quartzose beds with fish-remains, encrinite-stems, and fragments 

 of Phacops, a shaly bed with Phacops and Goniatites, then shales and 

 slates of some thickness, the weathered surfaces of which contain 

 numerous Tentaculites {T. scalaris, Schloth., T., sp.), Euomphcdus 

 serpens, Phill., Polyzoa, Goniatites, &c. ; then 50 feet of slate to the 

 sea-level, in which Tentaculites scalaris, Euomphcdi, Natica, and 

 many Brachiopoda occur abundantly. 



3. Heleshorough. — Tliis bold headland, which forms the eastern 

 side of Ilfracombe harbour,! could not satisfactorily examine on shore, 

 owing to the tides ; but fossils in the slates and sandstones seemed 

 much more rare here than in the series I have just mentioned, 

 though the limestone bands appeared to contain a large assemblage 

 of individuals, if not of species. Mr. Yalpy, who has most carefully 

 worked out the Heleshorough beds, informs me that Corals, Crinoidea, 

 Brachiopoda, Gasteropoda, and Cephalopoda are numerous, the lime- 

 stone, as well as the shales, being full of these remains ; he recog- 

 nizes certain bands of whitish siliceous rocks full of Brachiopoda, 

 and identifies the two well-known forms Sj>irifera disjuncta, Sow., 

 and Strophomena rhomhoidalis, AYahl., var. analoga, Phill., and also 

 on the eastern side of the headland a thin highly calciferous bed 

 which is crowded with weathered-out examples of minute spiral 

 Gasteropoda, Murchisonice, Holopellce, &c., together with Tentaculites 

 and defence-spines of fish ; and, more eastward still, beds of the same 

 character contain Orthoceras cylindraceum, Sow. 



I have thus dwelt somewhat at length upon the general structure 



