G. C. Crick — On Goniatites, Nautilus, etc. 413 



purple-grey colour due to staining. My own remarks were to 

 the effect that Mr. Kendall's views could be established only by 

 the evidence of colliery workings, and that no such evidence was 

 forthcoming. Mr. Marr confirmed the existence of rocks of various 

 ages around the Lake District which had been stained red. There 

 were no other speakers. A brief abstract of Mr. Kendall's paper 

 is given. So far as my memory serves it was practically identical 

 with his latest contribution to the subject. See Quart. Journ. 

 Geol. Soc, vol. li, part 2 (May, 1895), p. 235. 



I would simply say, in conclusion, that the only evidence we 

 have about the position among the Coal-measures of the Whitehaven 

 Sandstone is that furnished by the Frizington Hall boring. That, 

 as to whether the appearance of unconformity in the cliffs of 

 Whitehaven indicates an unconformity of any magnitude or merely 

 local erosion of no importance whatever, we have no direct 

 evidence. But that from the frequency of cases of mere local 

 erosion in Coal-measures, combined with the absence of evidence 

 of any unconformable series in colliery workings, it seems most 

 probable that the unconformity is but slight and local. That the 

 purple-grey colour of Carboniferous beds on every horizon is due 

 to staining, which has affected the more or less permeable strata and 

 left the impermeable unstained. Consequently the presence of 

 a belt of purple-grey sandstones and sandy shales, above an 

 unstained belt of clayey shales and coals, is simply evidence of the 

 coming in of sandy conditions and the cessation of clayey ones. 

 Finally I would remark, that when the existence of a great uncon- 

 formity at the base of the Whitehaven Sandstone, increasing north- 

 eastward, is proved by the evidence of colliery workings, it will be 

 time to consider whether the classification of the purple-grey beds 

 'of Shalk Beck needs revision. At present it appears to me that 

 Mr. Kendall's views as to this unconformity and its effects are 

 unsupported by any real evidence, and have no legitimate claim to 

 consideration. It is for him to show that what seem now to be merely 

 needless and baseless assumptions are founded upon solid grounds. 1 



V. — On Goxiatites evolutus, Phillips, and Nautilus tetragoxus, 

 Phillips ; with a list of the Species belonging to the 

 genus subclymexia. 

 By G. C. Crick, F.G.S., of the British Museum (Natural History). 



IN 1836, Prof. J. Phillips 2 described and figured from the Carbon- 

 iferous Limestone, Goniatites evolutus, and for this species 

 D'Orbigny, 3 in 1850, instituted the genus SubcJymenia. 



In 1851, L.-G. de Koninck 4 described and figured his species 

 Nautilus Omalianus, from the Lower Carboniferous Limestone of 

 Vise, Belgium, and gave no synonymy. In 1880, the same author 5 



1 It may prevent possible misunderstanding to state that the foregoing remarks 

 express simply my own personal views. 



- " Geol. Yorkshire," pt. ii, 1836, p. 237, pi. xx, figs. 65-68. 



3 "Prod, de Paleont.," vol. i, 1850, p. 114. 



4 " Animaux Fossiles," Suppl., p. 711, pi. lx, figs. Za-d. 



6 " Faune Calc. Carb. de la Belgique," pt. ii, p. b3, pi. xlv, figs. 5, 6 : Auu. Mus. 

 Boy. d'Hist. nat. de Belgique, ser. Paleont., vol. v. 



