PLATE XL VI. 

 Monograptus — continued. 



Figs. 



1 a — d. — Monograptus exiguus (Nicholson). (Page 453.) 



1 a. Group of typical specimens, figured Lapworth, Geol. Mag., 187(3, 

 pi. xx, fig. 6 a. Caddonfoot Quarry, S. Scotland. Gala Beds. 

 Lapworth's Collection. 



1 b. Two fragments crossing one another. Caddon Head, S. Scotland. 

 Gala Beds. Lapworth's Collection. 



1 c. Complete specimen. Portaferry, Co. Down. Gala Beds. Belfast 

 Natural History Museum. 



1 d. Long distal fragment, preserved in relief. Bont Green, River 



Twymyn, Llanbrynmair. Brynmair Beds. Wood's Collection. 



2 a — d. — Monograptus nodifer, Tornquist. (Page 454.) 



2 a. Typical specimen. Cefn Henclre Quarry, about 150 yds. E. of 



farm, 1^ miles E. of Aberystwith. Geological Survey of 

 England and Wales. 



2 b. Smaller, but typical specimen. Ibid. 



2 c. Small specimen. Ibid. 



2 d. Specimen on same slab as fig. 2 c. 



3. — Monograptus flagellar is, Tornquist. (Page 457.) 



Specimen probably referable to this species. Blythe Water, near 

 Lauder, S. Scotland. Gala Beds. Geological Survey of 

 Scotland. 



4 a — d. — Monograptus capillaceus, Tullberg. (Page 458.) 



4 a. Characteristic specimen. Streamlet at Grange, Milk Water, 6 

 miles N.E. of Ecclefechan, S. Scotland. Wenlock Beds. 

 Geological Survey of Scotland. 



4 b. Proximal fragment. On same slab as fig. 4 a. 



4 c. Distal fragment. On same slab as figs. 4 a and b. 



4 d. Distal fragment. Milk Water at Milkbridge, 3 miles S. of 



Lockerbie, S. Scotland. Geological Survey of Scotland. 



5 a — c. — Monograptus retroflexus, Tullberg. (Page 459.) 



5 a. Proximal fragment. Quarry near Nant Prophwyd, Builth. 



Wenlock Shales (zone of Cyrtog. rigidus). Elles' Collection. 



5 b. Small proximal fragment. Ibid. 



5 c. Distal fragment. Ibid. 



6 a, b. — Monograptus Barrandei (Suess). (Page 462.) 



6 a. Specimen, figured Lapworth, Graptolites of Co. Down, 1877, pi. 



v, fig. 21. Tieveshilly, Co. Down. Tieveshilly Beds. Lap- 

 worth's Collection. 



6 b. More proximal fragment, figured Lapworth, Geol. Mag., 1876, 

 pi. xx, figs. 5 a and b. Buckholm, Galashiels. Gala Beds. 

 Lapworth's Collection. 



