﻿516 Jin. F. E. C. EEED AND PFvOF. S. H. EETXOLDS ON [Nov. 1908, 



partly interbedded with the trap, which is not in accordance with 

 our observations. 



Weaver draws special attention to the band of compact material 

 (' grey hornstone ') forming Band 1 in the foregoing section, and 

 discusses the question as to whether it owes its hard character to 

 alteration by the heat of the trap. 



This section has yielded a large series of fossils, in addition to 

 those mentioned on p. 271 of the previous paper ; and the presence 

 of StricJclandinia lirata, Phacops Weaveri, Stropliomena compressa, 

 Streptelasma elongatum, and Heliolites parasitica, although not 

 affording conclusive evidence, indicates a Llandovery rather than 

 a Wenlock age. 



The following are the additional species met with ^ : — 



Favosites gothlandica.** \ Strophomena compressa .* 



Favosites Forbesi. ; ^tro'-pliomena cf. antiquata. 



Favosites aspera. ; Strophomena corrugatella 



var. 



Favosites Hisingeri. 

 Alveolites sp. 

 Heliolites A/urchisoni. 

 Heliolites parasitica. 

 Hallia mitrata (I). 



At ry pin a Barrandei. - 

 Atrypa reticularis."** 

 Orthis calligravima . var. 

 Orthis elegantula. 

 Orthis rnstica. 



CyatTio-phyllum sp. I Triplecia insidaris. ^ 



Streptelasma elongatiim. \ Stricklandinia lirata.* 



Monticuliporoid (indet.). 

 Favositella (I) sp. 

 A new Brj'ozoan, - 

 Fenestella sp. 

 Meristiyia tumida. 

 Spirifer elevatiis. 

 Spirifer crispus var. 

 Strophomena funiculata (1) . 



Fleet amhonites transversalis. 

 Horiostoma glohosum var. sculptum. 

 Horiostoma discors (1). 

 Ev.omphalus sp. 

 Cormdites serpularius. 

 Lichas sp. 



Cheirv.rns biimicronatus. 

 Fhacops Weaveri. 



Lord Ducie's collection contains 2Iodiolopsis mytilimens and 

 Grammy sia sp., in greenish-grey sandstone unlike any rock now 

 exposed. 



At the time of publication of the previous paper in the Quarterly 

 Journal no fossils had been found in the bed of grey sandstone, which 

 is described (p. 271) as interbedded with shale above the calcareous 

 ash at Cullimore's Quarry ; from this we have now, however, 

 obtained Atrypa reticidaris, Coelospira hemisplierica. Streptis rnoni- 

 lifera (?), Rhynchonella serrata^' and Alveolites sp.^ 



(h) The Aveniug-Green, Damery, Ironmill-Wood, 

 and Tortworth Areas. 



These, the most fossiliferous localities for Silurian rocks in the 

 district, are situated on a bed of sandy limestone or calcareous 

 sandstone having a thickness of about 500 feet, and lying between 



^ The sign * in our fossil-lists indicates that the species is abundant ; and ** 

 that it is very abundant. 



2 Found bv Mr. F. J. Richards. 



