PLATE XXII. 

 Dicellograptus — continued. 



FIGS. 



1 a — d. — Dicellograptus Forchammeri, Greinitz. (Page 150.) 



1 a. Typical form. Figured, Lapworth, Cat. West. Scott. Foss., 1876, 

 pi. iv, fig. 88. Dobb's Linn. Hartfell Shales (zone of Dicranog. 

 Cling ani). Lap worth's Collection. 



1 o. Typical form, on same slab as fig. 1 a. 



1 c. Less widely divergent form. Syart Law. Hartfell Shales. 

 Lapworth's Collection. 



1 d. Less rigid form. Figured, Hopkinson, Geol. Mag., 1871, vol. viii, 



pi. i, fig. 1 a. Hartfell Spa. Hartfell Shales. Sedgwick 

 Museum. 



2 a — d. — Dicellograptus Forchammeri, var. flexuosus, Lapworth. (Page 152.) 



2 a. PType specimen. Figured, Lapworth, Cat. West. Scott. Foss., 



1876, pi. iv, fig. 90. Dobb's Linn. Hartfell Shales. Lapworth's 



Collection. 

 2 b. Less widely divergent form, obverse aspect. Hartfell Spa. 



Hartfell Shales. Lapworth's Collection. 

 2 c. Large form, reverse aspect. Ibid. 

 2 d. On same slab as fig. 2 a. 



