52 BRACHIOPODA. 



Cyrtina carbonaria (McCoy), T. Davidson, Brit. Foss. Brach. 

 n, part v (1859), pi. xv, f. 5, 13, 14, p. 71. Pentamerus carbo- 

 narius, F. McCoy, A. M. N. H. ser. 2, x (1852), p. 426, and 

 Contrib. Brit. Pal. (1854), p. 253, and Brit. Palseoz. Foss. (1855), 

 pi. iii D, f. 12 18, p. 442. Carboniferous Limestone; Kendal. 



C. septosa (Phillips), T. Davidson, Brit. Foss. Brach. n, part v 

 (1863), pi. 1, f. 19, 19 a. Carboniferous Limestone; Settle. 

 Burrow Collection. 



Dinobolus ? hicksi [Davidson MS.], H. Hicks, Q. J. G. S. xxxi 



(1875), pi. x, f. 6, p. 188. Llanvirn Beds; Llanvirn Quarry. 

 Presented by Dr H. Hicks, F.R.S. 



Discina bulla, v. D. nitida. 



Discina (Trematis) corona, Salter, Cat. (1873), p. 55. T. 

 Davidson, Brit. Foss. Brach. Ill, part vii (1871), pi. xlix, f. 43, 

 44, p. 344. Middle Bala; Pusgill, Dufton. 



D. nitida (Phillips). D. bulla, F. McCoy, A. M. N. H. ser. 2, 

 x (1852), p. 421, and Contrib. Brit. Pal. (1854), p. 248, 

 and Brit. Palseoz. Foss. (1855), pi. iii D, f. 32, 32 a, p. 407. 

 Carboniferous Limestone; Lowick. 



D. pileolus [Hicks MS.], T. Davidson, G. M. v (1868), pi. xvi, f. 13, 

 13 a, p. 312. D. pileoMust, H. Hicks, Q. J. G. S. xxvn 

 (1871), pi. xv, f. 12, 12 a. Harlech Beds; St Davids. Pre- 

 sented by Dr H. Hicks. 



Glassia obovata (Sowerby). Athyris obovata, Salter, Cat. 

 (1873), p. 139. Spondylobolus craniolaris,-F. McCoy, A. M. 

 N. H. ser. 2, VIII (1851), p. 408, and Contrib. Brit. Pal. (1854), 

 p. 230, and Brit. Palseoz. Foss. (1852), pi. i H, f. 45, p. 255. 

 T. Davidson, Brit. Foss. Brach. in, part vii (1866), pi. viii, 

 f. 26, 27. Wenlock Shale; Builth Bridge. 



Hemithyris acuminata var. mesogona, v. Rhynchonella acuminata 

 var. mesogona. 



H. angustifrons, v. Meristella angustifrons. 

 H. davidsoni, v. Rhynchonella wilsoni var. davidsoni. 

 H. hemisphcerica var. scotica, v. Atrypa? scotica. 

 H. heteroptycha, v. Rhynchonella flexistria. 



