PLATE XXVII— continued. 



7 a — e. — Climacograptu8 caudatus, Lapworth. (Page 202.) 



7 a. — Typical specimen with long virgella. Grlenkiln Bum, Kirkmichael, Dumfries. 



Hartfell Shales. Lapworth's Collection. 

 7 b. Small specimen showing virgella and distal virgula. Ibid. 

 7 c. Specimen showing tubular virgella. Hartfell Spa. Ibid. 

 7 d. Typical form. Same locality as figs. 7 a and 7 b. 



7 e. Specimen having a long proximal spine in addition to virgella. Same locality as 



fig. 7 c. 



8 a — d. — Climacograptus tubuliferus, Lapworth. (Page 203.) 



8 a. Typical specimen. Hartfell Spa. Hartfell Shales. Lapworth's Collection. 

 8 b. Ditto, showing broad virgular tube. On same slab as fig. 8 a. 



8 c. Small specimen showing proximal end. Ibid. 



8 d. Larger specimen. Ibid. 



9 a—e. — Climacogra.pt us styloideus, Lapworth. (Page 205.) 



9 a. Typical specimen showing virgula with sac, scalariform view. Hartfell Spa. Hai-t- 



fell Shales. Lapworth's Collection. 

 9 b. Distal fragment, showing virgula and sac. Ibid. 

 9 c. Proximal part. Ibid. 

 9 d. Wide specimen. Ibid. 

 9 e. Complete specimen, scalariform view. Ibid. 



10 a — e. — Climacog rapt us innotatus, Nicholson. (Page 212.) 



10 a. Typical specimen. Dobb's Linn. Birkhill Shales (zone of Monog. gregarius). Elles' 



Collection. 

 10 b. Small specimen showing thecal spines. Ibid. 

 10 c. Long narrow specimen with few thecal spines. Dobb's Linn. Birkhill Shales. 



Lapworth's Collection. 

 10 d. Small specimen, obverse view. Ibid. Elles' Collection. 



10 e. Ibid. 



11 a — e. — CUmacngraptus Hughesi (Nicholson). (Page 208.) 



11 a. Typical specimen in full relief. Ambleside, Lake District. Skelgill Beds. British 



Museum (Natural History), S. Kensington. 

 116. Compressed specimen, in relief. Skelgill. Skelgill Beds (zone of Monog . fimbriates) . 



Marr's Collection. 

 11 c. Specimen in the flat. Branch Linn, Dobb's Linn. Birkhill Shales (zone of M. 



gregarius). Elles' Collection. 

 11 d. Small specimen, cast. Skelgill. Skelgill Beds (zone of M. argenteus). Marr's 



Collection. 



11 e. Specimen preserved in the flat. Main Cliff, Dobb's Linn. Birkhill Shales. Elles' 



Collection. 



12 a — c. — Climacograptus minutus, Carruthers. (Page 211.) 



12 a. Complete specimen. Frenchland Burn, S. Scotland. Birkhill Shales. British 



Museum (Natural History), S. Kensington. 

 12 b. Ibid. On same slab as fig. 12 a. 



12 c. Distal fragment. Ibid. 



13 a, b. — Climacograptus extremus, H. Lapworth. (Page 210.) 



13 a. Typical specimen in full relief, reverse view. Bhyd Hir Brook, Rhayader. Rhayader 



Pale Shales (zone of Monog. crassus). H. Lapworth's Collection. 



13 b. Ibid. 



11 a — e. — CUmacograptus Scliarenbergi, Lapworth. (Page 206.) 



14 a. Typical specimen, full relief. Dobb's Linn. Lower Hartfell Shales (zone of Climacog. 



Wilsoni). Lapworth's Collection. 

 14 b. Large specimen in relief. Ibid. 

 14 r. Specimen preserved in the flat, showing no zig-zag septum. Hartfell Spa. Lower 



Hartfell Shales (zone of Climacog. Wihmii). Lapworth's Collection. 

 14 d. Small specimen preserved as a cast, showing very long virgula. Ibid. 

 14 e. Small fragment, Pont Seiont, N. Wales. Upper Arenig Beds (zone of Didymog. 



bifidus). Sedgwick Museum. 



