Vol. 63. .] OF THE BATH-DO ULTING DISTRICT. 419 



The specimens which Mr. Tutcher collected are AcantJiotJiyris 

 spinosa, Rhynclionella hampenensis, Terebratula subsphceroidalis, 

 Aulacotliyris carinata, Montlivaltia DelabecJiei (in rock bored by 

 Lithophagi, the borings in some cases passing through the corals), 

 Isastrcea limitata, Otenostreon pectiniforme, Pecten sp., Pteria ' cos- 

 tataj Holectypus hemisphcericus, H. depressus, Pentacrmus Milleri, 

 Galeolaria socialis, Gylindrites sp., and two ammonites. 1 One of 

 the ammonites is Lissoceras psilodiscum, a species of the Truellii 

 hemera ; it indicates a horizon higher than that of Garantiance 

 date, and has not been previously recorded north of the Mendip 

 Hills (S. S. Buckman). The other is one of the Garantianum-gToup ; 

 perhaps Strenoceras precursor, Meyer, or Str. Garantianum (d'Or- 

 bigny), teste S. S. Buckman. 



Stantonbury Hill is situated between English Combe and Maes 

 Knoll, Dundry Hill. At English Combe the sequence is Upper 

 Trigonid-QxTit, Dundry Ereestone, Upper Coral-Bed, and Doulting 

 Stone (basement-beds) ; at Maes Knoll, Upper Trigonia-Gfit equi- 

 valent (of which the basement-layer is conglomeratic and called 

 the ' Conglomerate-Bed '), and Dundry Ereestone — the basal por- 

 tion : for the top-portion, together with the Upper Coral-Bed and 

 Doulting Beds, has been removed by a Bathonian denudation. 



At Stantonbury Hill the fossils obtained point to the presence 

 of beds equivalent to the Upper Trigonia-Grit and the Upper Coral- 

 Bed ; but, as some of the intervening Dundry Ereestone is present, 

 both at English Combe and at Maes Knoll, it seems fair to assume 

 that it is represented also at Stantonbury Hill. The occurrence 

 of beds of -post-Garantiance hemera is also indicated by the Lissoceras 

 psilodiscum, S. Buckman — a species, according to Mr. Buckman, 

 indicative of Truellii hemera. 



The record of Montlivaltia Delabechei is interesting. It occurs in 

 a bed that was exposed in the quarry near Castle Earm, at the 

 western end of Dundry Hill, 2 and at Maes Knoll % — at both places 

 in a deposit of Garantiana? hemera. There is no doubt, therefore, 

 as to the hemera in which it lived. 4 



1 See also Proc. Bristol Nat. Soc. n. s. vol. x. pt. ii (1903: issued for 1902) 

 pp. 162-63. 



2 Quart. Journ. Geol. Soc. vol. lii (1896) p. 676, where it is recorded as 

 ' Montlivaltia.' 



3 Ibid. p. 684, where it is noticed as ' Montlivaltia lens.'' The late R. F. Tomes, 

 F.G-.S., examined the specimens that I obtained from the ' West-End Quarry' 

 and Maes Knoll, and identified them with M. Delabechei. 



4 In the paper by Prof. S. H. Reynolds & Dr. A. Vaughan ' On the 

 Jurassic Strata cut through by the South-Wales Direct Line, &c.' (Quart. 

 Journ. Geol. Soc. vol. lviii, 1902, pp. 737 et seqq), certain blocks of limestone 

 brought up from the shafts near the Cross-Hands Inn contained ' numerous 

 specimens of a well-marked species of Montlivaltia, intermediate between 

 M. lens and M. Delabechei' Associated with this form was ' a Terebratula of 

 perovalis-l\ke aspect and Rhynchonella hampenensis' This ' Montlivaltia-'Bed ' 

 these authors placed, from the scanty evidence then available, immediately 

 below the Trigonia-Gvit. On June 20th, 1904, however, Dr. Vaughan wrote 

 to me as follows : — ' The position of the Montlivaltia-Bed at Sodbury has 

 solved itself. Mr. J. W. D. Marshall gave me a mass of rock full of the same 



