176 Mr. C. Lapworth on new British Graptolites. 



EXPLANATION OF THE PLATES. 



Plate IV. 



Fig. 1. Monograptus letntwardinensis, sp. nov. la, 16, natural size ; 



1 c, proximal portion, magn. 5 ; 1 d, distal portion, magn. 5. 



Lower Ludlow, Leintwardine. Collection, Mr. J. Ilopkinson, 



F.G.S. 

 Fig. 2. 31. Salweyi, sp. nov. 2 a, distal portion, nat. size ; 2 6, ditto, 



magn. Lower Ludlow, Elton Lane, Herefordshire. Collection, 



Mr. Ilopkinson. 

 Fig. 3. 31. cohmus, Barrande. 3 a, 3 6, young examples, nat. size ; 



3c, young example, magn.; 3rf, adult portion, magniiied. 



Lower Ludlow, Vinnal Hill, &c. 

 Fiq. 4. Ditto, after Barrande, Grapt. de Boheme, pi. ii. figs. 2, 3. 

 Fig. 5. M. Rcemeri, Barr. 5 a, 5 b, nat. size ; 5 c, proximal portion, 



magn.; 5 d, distal portion, magn. Lower Ludlow, Adferton, 



and Builth Bridge. 

 Fig. 6. M. galaensis, var. basilicus, var. nov. G a, adult portion, nat. 



size (the lower portion is an impression only) ; 6 b, ditto, mag- 

 nified (Wenlock Shales, Wellfield, near Builth); 6 c, proximal 



portion (31. serra, Hopk. MS.), nat. size; 6 d, mngn. Lower 



Ludlow, Elton Lane. 

 Fig. 7. M. Hisingeri, Can-., var. nudus. 7a, 7c, nat. size; 7b, magn. 



Grieston Shales, Grieston Quarry. Innerleithen. 

 Fig. 8 a. M. Flemingii, Salter, nat. size. Wenlock Shale, Wellfield, near 



Builth. 

 Fig. 8 b. M. crossMs, sp. nov., nat. size. Upper Birkhill Shales, Bobb's 



Linn, Dumfriesshire. 

 Fig. 8 c. M. riceartonensis, Lapworth, nat. size. Riccarton Beds, El- 



liotsfield, near Hawick. 

 Fiq. 0«. M. Halli, Barrande (Graptolites de Boheme, pi. ii. fi<r. 12). 

 Fig. 10. 31. cremdaris, sp.nov. 10 a, distal portion, nat. size; 106, ditto, 



magn. ; 10 c, distal portion (cast of), nat. size ; 10 d, ditto, 



magn. Birkhill Shales, Bobb's Linn. 

 Fig. 11. M. cremdaris, var. a. 11a, nat. size ; 116, lie, magn. Saugh- 



Hill beds, Girvan, Ayrshire. 

 Fig. 12. Cyrtograptus Linnarssoni, sp.nov. 12 a, nat. size ; 12 6, magn. 



Wenlock Shale, Builth Load, Radnorshire. 

 Fig. 13. Diplograptus sucialis, sp. nov. 13 a, 13 6, nat. size ; 13 c, magn. 



Upper Ilartfell Shales, Bobb's Linn. 

 Fig. 14. I), euglyphus, sp. nov. 14 a, nat. size ; 14 6, magn. ; 14 c, distal 



portion, nat. size ; 14 d, proximal portion ; 14 e, magn. Glen- 

 kiln Shales of Wanlockhead and Bobb's Linn. 

 Fig. 15. Climacograptus confertus, Lapworth. 15 a, proximal portion, 



magn. ; 15 6, distal portion, profile view, magn. ; 15 c, ditto, 



ventral aspect, magn. Lower Llandeilo of Llan Mill, near 



Narberth. 



Plate V. 

 Fig. 16. Azygograptus ccelebs, sp.nov. 16 a, proximal portion; 16 6, 



ditto, magn. ; 16 c, distal portion, nat. size. Upper Skiddaw 



Slates, Ellergill, Westmoreland. 

 Fig. 17. Dicellograptus complanatus, sp. nov. 17 a, 17 6, nat. size ; 17 c, 



axillary portion, magn. ; 17 d, 17 e, distal portion, magn. Upper 



Hartfell Shales, Bobb's Linn. 

 Fig. 18. D. patidosus, sp.nov*. 18 a, 18 6, 18 c, natural size; 18 d, 18 c, 



proximal portion, magn. ; 18/, distal portion, magn. Upper 



Cleukiln Shales, Craigmichan and Glenkiln Burn. 



