I860.] 



WEIGHT LIAS AND ISONE-BED. 



385 



Natica. (A very small shell.) 

 G-ervillia precursor, Querist. 

 Lima precursor, Quenst. 

 Neoschizodus (Trigonia) posterns (?), 



Qltens t. 

 Avicula contorta, Portl. 

 Myacites musciiloides ('?), Schl. (The 



same form as at Westbury.) 



Anomya. Small. 



Cardinia. Small. 



Cardium Rliretieum, Mer. 



Cardinm. (Resembling the Westbury 



shell.) 

 Leda. 



Cyprieardia. (Small.) 

 Mytilus minntns, Goldf. 



Quenstcdt's specimens (Dor Jura, Tabl. i. pp' 27 & 28) were col- 

 lected from beds which he describes as " l)ic Vorliiufer von Niir- 

 tingen," which lie below the Bone-bed ; they are consequently the 

 equivalent of the stratum now under consideration. 



Culverhole. — The Avicula contorta beds are represented at Culver- 

 hole, near Axmouth, by a series of black shales, interstratincd with 

 limestone-bands, and having the Bone-bed at their base, in the fol- 

 lowing order, from above downwards : — ■ 



No. ft. in. 



1. Black shale 3 



2. Limestone 10 



3. Black shale 5 



4. Limestone 10 



No. ft. in. 



5. Black shale 1 



6. Limestone 10 



7. Black shale 7 



8. Bone-bed 2 



My notes on the contents of the limestone-bands and shales are 

 too imperfect for publication. The Bone-bed, however, contains 

 Coprolites and the teeth and scales of Fishes ; of these I have seen 

 remains of Gfyrolepis, teeth of Hybodus and Saurichihys, as well as 

 bones of Saurians in masses of this bone-breccia. 



Staffordshire. — The sandstone of the Bone-bed has been found, 

 by Mr. H. Howell, of the Geological Survey, at Abbot's Park, mar 

 Abbots Bromley, Staffordshire, at the base of an outlier of the Lower 

 Lias. In a section which is exposed in the road at Buttermilk Hill, 

 on the northern escarpment of this outlier, Mr. Howell found some 

 beds of impure limestone, above which is a thin bed of micaceous sand- 

 stone containing FuUastra arenicota, Strickl., and what appear to 

 be EsihericBf all of which are in moulds and casts. 



This bed La about one foot thick ; and there can be no doubt that 

 it is the representative of the Bone-bed of the Lias, for it occupies 

 the same position, and is in every respect similar to the bed of 

 sandstone which occurs at the base of that formation near Tewkes- 

 bury*. 



Warwickshire. — The Avicula contorta beds are exposed in several 

 Localities In Warwickshire, as at Wbtton Park near Alcester, and at 

 Church Lench near Evesham; sections <>i' these beds are seen like- 

 wise in the Btratford-on-Avon Railway near that (own. and at the 

 western extremity of the EEarbury Gutting of the Great Western 

 Railway. They have also been exposed near Binton; and lately 

 their thickness and contents have been ascertained by a sinking made 

 ,i! M i , Qn es and Kershaw's quarry at Wilmoote, of which the 

 following detailed Beotiont affords all the particulars, at the same 



* Bee Mem. QeoL Survey : Explanation of Section, No. 2, aorow the Nen B I 

 Sandstone) Eorizoul >1 Section, Sheet 67, p. 6, 1859. 



t In introducing this valuable and instru iiw Beotion, it may not be out of 



