PLATE XXXIX. 

 Monograptus— CO wh/iM erf. 



Figs. 



1 a — d.^Monocjraptus atavus, Jones. (Page 403.) 



la. Proximal portion, figaired Jones, Quart. Journ. Geol. Sou., vol. Ixv, p. 532, fig. 18 a_ 



Rheidol Gorge. Rheidol Group. Geological Survey of England and Wales 



(23706). 

 1 h. Straighter and more median fragment. Klieidol Gorge, 235 yards S. of Bryu-eliwitli 



Farm, Pont Erwyd. Elieidol Group. Geological Survey of England and Wales. 

 1 c. Median fragment with dorsal curvature, figured Jones, loc. cit., fig. 18 d. Ibid. 



(23711). 



1 d. Long fragment with ventral curvature. Same locality as fig. 1 b. 



2a — d. — Monogrcqdus Boemeri (Barrande). (Page 397.) 



2 a. Typical specimen, figured Wood, Quart. Journ. Geol. Soc, vol. hi, pi. xxv, tig. 13 a. 



Ti'efnant-Middletowu Brook. Long Mountain. Lower Ludlow Shales (zone of M. 



scanicus). Wood's Collection. 

 2 b. Distal fragment, figured Wood, loc. cit., fig. 13 b. Ibid. 

 2 c. Somewhat narrower specimen, in relief. Helm Knot, Dent. Conistou Grits. 



Sedgwick Museum. 



2 d. Characteristic specimen, well preserved. Dudley. Ludlow Shales. University of 



Birmingham. 



3 a — d. — Monograptus cliiiniera (Barrande). (Page 398.) 



3 a. Typical specimen, figured Wood, loc. cit., fig. 18 b. Stream from Ucheldre to Trewern 



Bridge, Long Mountain. Watts' Collection. 

 3 h. Fairly complete specimen, figured Wood, loc. cit., fig. 18 a. Elton-Ludlow Road. 



Lower Ludlow Shales. Wood's Collection. 

 3 c. Proximal portion. Ibid., fig. 18 c. 



3 d. Small specimen. Ibid., fig. 18 d. 



4 a — c. Monograptus chiiniera, var. semispinosus, EUes and Wood, nom. nov. (Page 401.) 



4 fl. Comjilete specimen. Stormer Hall, near Leintwardine. Lower Ludlow Shales. 



Wood's Collection. 

 4 6. Narrower specimen. Ibid. 



4 c. Type specimen, figured Wood, loc. cit., fig. 20. Eltou-Ludlow Road. Lower Ludlow 



Shales (zone of M. scanicus). Wood's Collection. 



5 a — d.—Monograptus chimiera, var. Saliveyi (Hopkinson). (Page 400.) 



5 a. Complete specimen, figured Wood, loc. cit., fig. 19 a. Stormer Hall, near Leint- 



wardine. Lower Ludlow Sliales. Wood's Collection. 

 5 b. Tyjje specimen, showing long virgula, figured Lapworth, Ann. Mag. Nat. Hist. [5], 



vol. V (1880), pi. iv, figs. 2 a and b. Stormer Hall. Lower Ludlow Shales. 



Hopkinson's Collection. 

 5 c. Narrow specimen, cast, showing thecal spines well. Stormer Hall. LoAver Ludlow 



Shales. Wood's Collection. 



5 d. Reverse of fig. 5 c, in relief, thecal spines very inconspicuous. Ibid. 



(ja — e. — Monograptus varians. Wood. (Page 395.) 



6t/. Type specimen, figured Wood, loc. cit., tig. 14 a. Old Dingle Mill, Long Mountain. 

 Lower Ludlow Shales. Wood's Collection. 



6 6. Broader specimen, tigured Wood, loc. cit., tig. 14 b. Road above Garbett's Hall, 



Long Mountain. Lower Ludlow Shales. Wood's Collection. 



