MORRIS— BRITISH FOSSILS. 



283 



Plirap;moceras iuteimedium, M'Coy, P. Orthoceras cxcentrieum, Sow. S. S. Q'd. 

 F. 322. filosiim, Soio. Sil. 258. 



iiautileum, iS'ozy. Sil. 258. firabriatum, ;S'ozt'. S. S. 620. 



pyriiorme. Sow. Sil. 258. grcgareuiii, Soic. S. S. ()16. 



Yentricosum, Soio. Sil. 253. imbricatura, }Ya]il. Sil. 258. 



Lituitesai-ticulatus,;S'ozy. S- S. 622. ibex, Soic. Sil. 258. 



Biddulphii, >Soiy. S. S. 62a. laqueatum,//a//, P. N. Y. 1. 13. 



giganteus, Soil\ Sil. 259. Ludense, So^c. Sil. 258. 



tortuosus, Soio. S S. 626. Maclareni, Salt. Sil. 176. ^ 



Orthoceras annulatum, Soio, M. C. t. Mocktreense, Sow. S. S. 258. 

 133. priiuffiYum, Forbes, Sil. 258. 



angulatum, Walil. Sil. 258. perelegaus, Sail. M. G. S. 2. 854. 



articulatum, Sow. S. S. 613. semipai'titum, Soxv. S. S. 674. 



attcnuatimi, Soii\ S. S. 632. substriatum, d'Orh. Prod. 54.^^ 



bullatura, Soiv. Sil. 258. subundalatum, Poj/^. G. 11. 373 



canaliculatuii), Sow. Sil. 258. subgregariura, M' Coy, S. F. p. '.J. 



central e, 7/25. Let. Suec. 29. tenui annulatum, J/' Co?/, P. F. 320. 



circularOj Soic. M. C. 29. teuuicinctum, Portl. R. 37 1. 



couicum, His. Let. Suec. 29. trachcale, Soio S. S. 604. 



dimidiatum. Sow. Sil. 258. vertebralo, Hall, P. N. Y. 1. 201. 



distans, Sow. S. S. 619. 



Sedis IkcePlT.e. 



Lscbadites Kcenigi, S. S. GOT. Spongarium Edwardsi, Murch. S. S. 



Spongariura gequistriatum, M' Coy, P. 696. 



F. 42. iuterlineatum, IFCoy, P. F. 43. 



interrupt um, 31' Coy, P. F. 43. 

 [For the Fisles, see " Tilcstones;' p. 2SG.] 



WEN LOCK GROUP. 

 Localities or tue Taranxon Suales. 

 These rocks, which arc sometimes shales, occasionally hard and 

 slat}", and containing but few fossils, occupy an intermediate place 

 between the Llandovery beds and the overlying Denbigh grits and 

 shales. Kear Llandovery ; New Bridge and at Tarannon, between 

 Llanbrynmaer and Llandiloes, in Montgomeryshire. 



Localities of Benligli liocJcs, — These beds consist of snndstones, 

 grits, shales, and flagstones, usually presenting a slaty cleavage. 

 Marloes Bay, Pembrokeshire; near Bala, near Llanbister, Baduor- 

 shire ; Berwyns, Denbighshire. The fossils are chiefly Wenlock 

 species, Chonetes lata, Spirifer trapezoidalis, Cucullella ovata, Murclii- 

 sonia Lloydii, Bellerophon carinatus, Arthoceras annulatum. 



LocaUties of JFooIhojjs Limestones.— X. variable deposit of grey lime- 

 stone, either thick-bedded or nodular, and subordinate to beds of shale. 

 This bed and the Denbigh grits are considered by Sir E. Murchison to 

 be simply lithological varieties of the lower portion of the AYenlock 

 formation (Siluria, p. 116). Gorton, near Prestcign, IN'ash Scar, Old 

 Badnor, Woolhope, Ilayhead, near Walsall, Colmer's End. 



Fossils. — Orbicula Porbesi, Strophomena imbrex, S. pcctcn, Spirifer 

 elevatus, S. trapezoidalis, Euomphaiiis sculptus, Orihoccras^annulatum, 



z 2 



