HYDROZOA. 11 



Dictyograptus homfrayi, J. Hopkinson, Q. J. G. S. xxxi (1875), 

 pi. XXX vi, f. 13, p. 668. Lower Arenig ; Eoad-uchaf, Ramsey 

 Island. Presented by D. Homfray, Esq. 



Didymograptus bifidus (Hall), J. Hopkinson, Q. J. G. S. xxxi 



(187.5), pi. xxxiii, f. 8 d, p. 646. Upper Arenig ; Porth-hayog, 

 St Davids. Presented by Dr H. Hicks. 



D. euodus, C. Lapworth, Q. J. G. S. xxxi (187.5), pi. xxxv, f. 1 

 a — c, p. 645. Lower Llandeilo ; Abereiddy Bay. Presented 

 by Dr H. Hicks. 



D. extensus (Hall), J. Hopkinson, Q. J. G. S. xxxi (1875), pi. 

 xxxiii, f. 1 a — d, p. 642. Lower A renig ; Road-uchaf, Ramsey 

 Island. Presented by J. Hopkinson, Esq. 



Another specimen, J. Hopkinson, A. M. N. H. ser. 5, ix 

 (1882), p. 56, woodcuts 3, 3 a. Skiddaw Slates; Randal Crag, 

 Skiddaw. Dover Collection. 



D. ftircillatus, C. Lapworth, Q. J. G. S. xxxi (1875), pi. xxxv, 

 f. 3 h, c, p. 649. Lower Llandeilo ; Abereiddy Bay. Presented 

 by Dr H. Hicks. The specimen does not quite agree with the 

 figure. 



D. gibberulus, H. A. Nicholson, A. M. N. H. ser. 4, xvi (1875), 

 pi. vii, f. 3, 3 a, b, p. 271. Skiddaw Slates; fig. 3 from 

 Randal Crag, fig. 3 a, b, frmn White Horse Fell, Skiddaw. 

 Dover Collection. 



D. latus. Salter, Cat. (1873), p. 20. Graptolites latits, F. McCoy, 

 Q. J. G. S. XV (1848), p. 223, woodcuts. Portions of various 

 Dichograptid stipes, H. A. Nicholson, Q. J. G. S. xxiv (1868), 

 p. 141. (Exclude the specimens described by McCoy from 

 the Wenlock Shale, Builth, v. Monograptus priodon.) Skiddaw 

 Slates; Knockmurton. 



D. murchisoni (Beck), C. Lapworth, Q. J. G. S. xxxi (1875), 

 pi. xxxv, f 2 a [b, f, ?mis8ing], p. 648. Lower Llandeilo ; 

 Abereiddy Bay. Presented by Dr H. Hicks. 



D. pennatulus (Hall), J. Hopkinson, Q. J. G. S. xxxi (1875), 

 pi. xxxiii, f 3 a, e, p. 643. Lower Arenig; Road-ucluif 

 Rajnsey Island. Presented by J. Hopkinson, Esq. F.G.S. 



