PLATE XLI. 



Monograptus — con tin ucd. 

 Figs. 



1 a — e. — Monograptus vomerinus (Nicholson). (Page 409.) 



1 (T. Typical specimen, impression, (?) figured Lapworth, Geol. Mag., 

 1876, pi. xii, fig. 6 a. Elliotsfield, S. Scotland, Riccarton 

 Beds. Lapwortli's Collection. 



1 b. Smaller specimen, in full relief. Lledcwm Stream, Newydd 

 Fynyddog, near Llanbrynmair. "Wenlock Shales (zone of 

 Ci/rtog. Murchisonl) . Wood's Collection. 



1 c. Specimen, partly in relief, part cast. West side of Long Sleddale, 

 Lake District. Base of Coniston Flags. Lapwortli's Collection. 



1 (/. Distal fragment, impression. Rig Burn, River Esk, near Lang- 

 holm. Wenlock Beds. Geological Survey of Scotland, Edin- 

 burgh. 



1 e. Long distal fragment, with apertures facing the observer. West 



of Wharfe, Lake District. Lower Coniston Flags. Sedgwick 

 Museum. 



2 a — d. — Monograptus vomerinus, var. IxisiUcus (Lapworth). (Page 41 L) 



2 a. Typical specimen. Cutting, Wellfield, near Builth. Wenlock 



Shales (zone of Cijrtog. Linnarssoni). Lapwortli's Collection. 

 2 h. Distal fragment. Wellfield, near Builth. Wenlock Shales. 



Lapwortli's Collection. 

 2 c. Type specimen, figured Lapworth (in part), Ann. Mag. Nat. Hist. 



[5], vol. V, pi. iv, figs. 6 a and h. On same slab as fig. 2 a. 



2 d. Proximal portion. Pencerrig, near Builth. Wenlock Shales 



(zone of Cijrtog. Murcliisoni). Elles' Collection. 



3 a — d. — Monograptus vomerinus, var. gracilis, Elles and Wood, nom. nov. (Page 



411.) 



3 a. Typical specimen, impression. Elliotsfield, S. Scotland. Ric- 



carton Beds. Lapwortli's Collection. 

 3 b. Proximal portion. Trecoed, near Builth. Wenlock Shales (zone 



of Cyrtog. Murchisoni). Elles' Collection. 

 3 c. Broad distal fragment, impression. On same slab as fig. 3 h. 



3 d. Proximal fragment, impression. Pencerrig, near Builth. Wen- 



lock Shales (zone of Cijiiog. Murchisoni). Elles' Collection. 



4 a — d. — Monograptus vomerinus, var. creuulatus (Tornquist). (Page 412.) 



4 a. Distal fragment, partly in relief. Tarannon River, just below 



Dolgau Farm. Dolgau Beds. Wood's Collection. 

 4 b. Similar fragment, partly in relief. Ibid. 



