PLATE XXXVIL 



MonOgV^i^tuS— continued. 



Figs. 



1 a — e. — Mono(jra]}tns NUssoni (Barrande). (Page 369.) 



1 a. Typical specimen, figured Wood, Quart. Jouru. Geol. Soc, vol. Ivi, pi. xxv, fig. 28 a. 



Adferton, uear Ludlow. Lower Ludlow Shales. Hopkiusou's Collection. 

 1 h. Specimen, showing double curvature. Montgomery Road. Lower Ludlow Shales. 



Sedgwick Museum. 

 1 c. Broad distal fragment, figured Wood, loc. cit., fig. 28 b. Elton-Evenhay Lane, near 



Ludlow. Lower Ludlow Shales. Wood's Collection. 

 1 f?. Long distal fragment. Trefnant Brook, Long Mountain. Lower Ludlow Shales. 



Wood's Collection. 



1 e. Fairly complete specimen, with abrupt proximal curvature. Ibid. 



2 a — d. — Monograjjhis leptotheca, Lapworth. (Page 371.) 



2 a. Typical median fragment, internal cast in iron pyrites. Dobb's Linn. Birkhill 



Shales. Ijapworth's Collection. 

 2 h. Proximal fragment, partly in relief. Llanystwmdwy, near Criccieth. Llandovery 



Beds. Fearnsides Collection. 

 2 c. Distal fragment, with slight dorsal curvature. Eheidol Gorge, 440 yards S.S.E. of 



Bryn-chwith Farm, Pout Erwyd. Castell Group (base of zone of M. convolutus). 



Geological Survey of England and Wales. 



2 d. Long and broad distal fragment. Pary's Mountain, Auglesea. Llandovery Beds. 



Greenly's Collection. 



3 a—d. — Monocjraptus regvlaris, Tiirnquist. (Page 372.) 



3 a. Long distal fragment, impression. Dobb's Linn. Birkhill Shales. Geological 



Survey of Scotland, Edinburgh. 

 3 6. Distal fragment, mainly in relief. E. side of old quarry, N.E. of Fagwr-fawr Farm, 



2 miles E.N.E. of Pont Erwyd. Castell Group (zone of M. convolutus). Geological 



Survey of England and Wales. 

 3 c. Fragment nearer proximal end, impression. Pary's Mountain, Anglesea. Llandovery 



Beds. Greenly's Collection. 



3 d. Long fragment, cast. Eheidol Gorge, 420 yards E.S.E. of Bryn-chwith Farm, Pont 



Erwyd. Eheidol Grouj). Geological Survey of England and Wales. 



4« — d. — Monograptiis jactdmn (Lapworth). (Page 373.) 



4a. Proximal portion. Dobb's Linn. Upper Birkhill Shales. Lapworth' s Collection. 



4 b. Distal portion, impression. Ibid. 



4 c. Long distal fragment, with slight dorsal curvature, impression. Garple Linn, near 

 Moffat. Upper Birkhill Shales. Lapworth's Collection. 



4 d. Specimen on same slab as fig. 4 c. 



5 a, h. — Monograptus variahilis (Peruer). (Page 374.) 



5 a. Proximal portion, showing sicula. Marsh, Conway. Tarannon Shales. Elles' 



Collection. 



5 h. Distal fragment. Corner near Forge, Conway. Tarannon Shales. Elles' Collection. 



6 a — e. — Monograptus nudus (Lapworth). (Page 375.) 



6 a. Incomplete but typical specimen, figured Lapworth, Geol. Mag., 1876, pi. xii, fig. 1 a. 



Grieston Quarry, Innerleithen. Tarannon Sliales. Lapworth's Collection. 

 6b. Proximal portion, showing sicula. W. side of upper quarry, 550 yards E.S.E. of 



Fuches-gau Farm-house, Pont Erwyd. Castell Group. Geological Survey of 



England and Wales. 

 6 c. Similar specimen, impression. Nant Fuches-wen, Cardiganshire. Castell Group. 



Jones' Collection. 

 6 d. Distal fragment, partly in low relief. Same locality as fig. 6 b. 

 6 e. Proximal portion. Gelli Stream, Newydd Fynyddog, near Llanbrynmair. Tarannon 



Beds. Wood's Collection. 



