398 Dr. F. A. Bather un British Fossil Crinoids : 



J. "Woodward, 1728. ' Cataloo;ue of the Additional English. 

 Native Fossils &c.,' tome ii. p. 51. 

 Tcntacrinites suhbasaltiformig, provisional name for stem-fragments 

 obtained by J. Sowerby at Islington ; also said to occur at Rich- 

 mond and Kensington ; incompletely described. J. S. Miller, 1821, 

 ' Nat. Hist. Crin.,' p. 140. 

 Penfarrhiirs subbaaaltiformis Miller, .1. de C. Sowerby in Wetherell, 

 1840, ' Observations on a Well dug on the South side of Hanipstead 

 Heath,' Trans. Geol. Soc, (2) v. p. 180, pi. viii. tig. 3 a (non 3 b). 

 Pentacrinus sowerbii (Wetherell MSS.), J. de C. Sowerby, pag. cit. 



pi. viii. fig. 4. 

 Pentacrinus suhhasalUformis Miller, T. & T. Austin, 1847, * Monogr. 



Crinoidea,' p. \2'2, pi. xvi. fig. 2. 

 Pentacrinus sowerbii Wetherell [s/c], T. & T. Austin, op. cit., p. 123, 

 pi. xvi. figs. 3 a, 3 b. 



The Austins' figures all appear to be exceedingly bad copies of 

 Sowerby's. They add no fact except that P. siibbasaltiformis has 

 been recorded from Ilerne Bay. 

 Pentacrinus subbasaltiformis Miller, E. Forbes, 1852, ' Palaeont. Soc, 



^lonogr. Tertiary Echiu.,' p. 34, pi. iv. figs. 8, 9, 10. 

 Pentacrinus sowerbii Wetherell \_sici, E. Forbes, op. cit., p. 35 and text- 

 figs. 2 a, b, c on p. 36. 



It is a little difficult to say what should be the Holotype. 

 If Miller's incomplete and uuillustrated reference, which lie 

 says was purposely not intended as a diagnosis, were to be 

 accepted, then the stem-fragments supplied to him by 

 J. Sowerby would be syntypes ; but these, if they are 

 extant, certainly cannot be identified. It is therefore 

 simpler to start from J. de C. Sowerby ; and in this case 

 one would naturally take the specimen from the Wetherell 

 Collection which he figured. This should be in the British 

 Museum, but I am unable to find any specimen from Hamp- 

 stea(\ agreeing with the drawing. I therefore fix on 

 no. 57540, wliich is certainly a syntype of J. de C. So\verl}y's, 

 and may legitimately be made the Lectotype. This specimen 

 is a fragment in matrix, and comprises parts of two inter- 

 nodes meeting at a syzygy, one part 188 mmTlong, including 

 9 columnals, the other 37"5 mm. long, including 19 

 coluranals ; there are two cirrus-facets at the syzygy. 



The material studied consists of some seventy stem- 

 fragments in the British Museum (Natural History), 

 obtained from the collections of J. S. Bowerbank, F. E. 

 Edwards, N. T. Wetherell, E. Spencer, Tonlmin Smith, 

 R. Maitland, James Baber, and W. Mellis. They come from 

 the London Clay of the following localities : — Bracklesham 

 Bay, Sheppey, Harwich, Sewardstone in Essex, and in the 

 Loudon area — Hampstead including the famous well (Trans. 

 Geol. Soc. 1840) and the cutting of the Loudon & North- 



