NOTES AND CORRECTIONS. 117 



The following is a list of Yorkshire Testacea figured in the former Monograph which are not known to 

 occur in any stratum more recent than the gray limestone of Scarborough, and should therefore, in accord- 

 ance with the foregoing views, be excluded from the fauna of the Great Oolite : 



PART I. 



AMMONITES BRAIKENRIDGII. Tab. XIV, fig. 1. 



BLAGDENI. Tab. XIV, figs. 3 a, b. 



BELEMNITES GIGANTECS. Tab. XIV, figs. 4, 4 a. 



SERPCLA PLICATILIS. Tab. XIV, figs. 5, 5 a, b. 



SULCATA. Tab. XIV, fig. 6. 

 CEKITHICM BEAKII. Tab. XV, fig. 5. 

 CHEMNITZIA (?) VETUSTA. Tab. XV, fig. 7. 



SCAEBUEGENSIS. Tab. XV, fig. 8. 

 AcTjEon SEDGVICI. Tab. XV, figs. 9, 9 a. 

 PULLUS. Tab. XV, fig. 11. 



ACTEONINA GLABRA. Tab. XV, fig. 10. 



TUMIUCLA. Tab. XV, fig. 14. 

 PHASIAVELLA LATIUSCULA. Tab. XV, fig. 16. 

 NATICA ADDUCTA. Tab. XV, figs. 17, 17 a. 



(EUSPIRA) CINCTA. Tab. XV, fig. 20. 

 TROCHUS LECKENBYI. Tab. XV, figs. 21, 21 a. 



PART II. 

 MTTILUS (MODIOLA) LECKENBYI. Tab. XIV, fig. 9. 



CuCDLLjEA CANCELLATA. Tab. XIV, fig. 12. 



UNICARDIUM GIBBOSUM. Tab. XIV, fig. U. 

 TRIGONIA SIGNATA- DECOKATA. Tab. XV, fig. 1. 

 ASTARTE ELEGANS, Phil, (non Sow.). Tab. XIV, fig. 1-1. 



ISOCAKDIA CORDATA. Tab. XV, fig. 5. 



MYACITES BEANII. Tab. XV, figs. 11 a, b. 



SCAHBCRGENSIS. Tab. XV, fig. 13. 

 ;EQUATUS. Tab. XII, fig. 15. 



Cornbrash of the Coast of Yorkshire : its MoUuaca. 



The Mollusca of the Yorkshire Cornbrash offer, in their association, some marked contrasts with those of 

 the southern counties and of the Continent upon the same geological horizon. In the southern localities 

 the marine floors, crowded almost exclusively with Brachiopoda, is the predominating feature that arrests 

 the attention ; in the northern the Conchifera constitute the great majority ; the Brachiopoda, few indivi- 

 dually, are reduced almost to the two species Terebratithi lagenalis and T. obovata, the latter being 

 represented by forms dwarfed to about a third of the linear dimensions which the species attains in 

 Wiltshire. The condition of the Testacea also offers some interesting contrasts. In Wiltshire the 

 Conchifera are usually in the condition of casts, of which a large proportion are compressed and distorted ; 

 in Yorkshire the hard, dark-coloured limestone has preserved the more delicate external characters in a very 



