384 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [June 16, 



acids, although not sufficiently calcareous to deserve the name of a 

 limestone. 



The following organic remains occur in it at Hagley Quarry :— 



Cyathophyllum ? 



Favosites polymorpha, Goldf. sp., Sil. Syst. pi. 15. f. 2. 

 Cophinus dubius, Konig, Sil. Syst. pi. 26. f. 12. 

 Crinoidal stems (pentagonal). 



Cyathocrinites macrostylus, Phillips, Mem. Geol. Surv. ii. p. 384. 

 Serpulites longissimus, Murch., Sil. Syst. pi. 5. f. 1. 

 Homalonotus Knightii, Konig, Sil. Syst. pi. 7. f- 1, 2. 

 Calymene Blumenhachii, Brongn., Sil. Syst. pi. 7- f. 5. 

 Rhynchonella semisulcata, Dalm. sp. {Terehratula lacunosa, Sil. Syst. 

 pi. 5. f. 19). 



Wilsoni, Sow. sp., Sil. Syst. pi. 6. f. 7 a. 



nucula, Sow. sp., Sil. Syst. pi. 5. f. 20. 



Orthis orbicularis, Sow., Sil. Syst. pi. 5. f. 16. 



lunata. Sow., Sil. Syst. pi. 5. f. 15. 



Strophomena filosa, Sow. sp., Sil. Syst. pi. 13. f. 12. 



Leptsena sarcinulata, Schlott. sp. (i. lata, Sil. Syst. pi. 5. f. 13). 



Orbicula striata, Sow., Sil. Syst. pi. 5. f. 12. 



rugata. Sow., Sil. Syst. pi. 5. f. 11. 



Lingula minima. Sow., Sil. Syst. pi. 5. f. 23. 

 Orthonota amygdalina. Sow. sp., Sil. Syst. pi. 5. f. 2. 



retusa. Sow. sp., Sil. Syst. pi. 5. f. 5. 



Avicula ampliata, Phillips, Mem. Geol. Surv. ii. pi. 23. f. 1 . 

 Orthoceras buUatum, Sow., Sil. Syst. pi. 5. f. 29. 



perelegans, Salter, Mem. Geol. Surv. ii. pi. 13. f. 2. 



ibex. Sow., Sil. Syst. pi. 5. f. 30. 



gregarium?. Sow., Sil. Syst. pi. 8. f. 16. 



Many of these fossils, especially the Orthocerata, are penetrated 

 with sulphuret of iron, which gives them a bright metallic gloss. 



In addition to the above-mentioned invertebrate forms, an interest- 

 ing portion of a crustacean has been forwarded to me by Mr. M. J. 

 Scobie from the Upper Ludlow shale underlying the bone-bed, of 

 which Mr. Salter has kindly undertaken the description. (Seep. 386.) 



Traces of ichthyic remains, especially the minute teeth of Thelodus 

 parvidens, are occasionally found interspersed in the bed No. 10, but 

 never in the same abundance as in No. 9. 



Having now enumerated the strata of Hagley quarry and their 

 organic contents, I must make a few remarks on the geological phse- 

 nomena attending them. 



It was stated above that the beds here exposed assume the form of 

 a flattened dome. By reference to the map it will be seen that this 

 protruded dome is about half a mile to the N.W. of the well-known 

 dyke of greenstone at Bartestree, which cuts through horizontal strata 

 of Old Red Sandstone, and runs in an E.N.E. direction towards the 

 S. edge of the protruded Silurian mass of Shucknall Hill*. About 



* See Murchison, Sil. Syst. p. 185 ; and Phillips, Mem. Geol. Surv. vol. ii. p. 180. 



