PLATE XXIX (continued). 



Figs. 



5 a — d. — Orthograptus truncatus, var. pauperatus, Lapworth MS. (Page 237.) 



5 a. Small characteristic specimen, reverse aspect. Hartfell Spa. 



Hartfell Shales (zone of Dicranog. Olingani). Lapworth's 



Collection. 

 5 b. Ditto. Dobb's Linn. Hartfell Shales. Dr. Fraser's Collection. 

 5 c. Smaller specimen. Hartfell Spa. Hartfell Shales. Lapworth's 



Collection. 



5 d. Ditto. On same slab as fig. 5 c. 



6 a — e. — Orthograptus truncatus, var. abbreviatus, Elles and Wood, nov. (Page 235.) 



6 a. Typical specimen, obverse aspect, well preserved. Dobb's Linn. 



Upper Hartfell Shales (zone of Dicellog. anceps). Elles' Col- 

 lection. 



6 b. Compressed specimen. Belcraig Burn. Hartfell Shales (zone of 

 Dicellog. anceps). Elles' Collection. 



6 c. Distal portion. Dobb's Linn. Hartfell Shales (zone of Dicellog. 

 anceps). Wood's Collection. 



G d. Fairly complete specimen. On same slab as fig. 6 c. 



6 e. Long narrow specimen, probably referable to this variety. Dobb's 



Linn. Lower Birkhill Shales. Wood's Collection. 



7 a — e. — Orthograptus truncatus, var. socialis, Lapworth. (Page 237.) 



7 a. Typical specimen, obverse aspect. Dobb's Linn. Upper Hartfell 



Shales (zone of Dicellog. complanatus). Lapworth's Collection. 

 7 b. Long specimen. Ibid. 

 7 c. Small specimen. Ibid. 

 7 d. Broad specimen. Ibid. 



7 e. Characteristic form. Ibid. 



8 a — c. — Orthograptus cyperoides, Tornquist. (Page 238.) 



8 a. Relatively large specimen, obverse aspect. Dobb's Linn (Long 



Cliff). Birkhill Shales (zone of Monog. gregarius). Elles' 



Collection. 

 8 b. Characteristic form, reverse aspect. Ibid. 

 8 c. Small specimen, obverse aspect. Ibid. 



