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 BrRatkENR wer. Tab. XIV, fig. 1. 
— Buagpenr. Tab. XIV, figs. 3 a, d. 
BELEMNITES GIGaNTEUS. Tab. XIV, figs. 4, 4a. 
SERPULA PLIcaTILIs. Tab. XIV, figs. 5, 5a, 6. 
—  sutcatTa. Tab. XIV, fig. 6. 
CrritHiuM Beanit. Tab. XV, fig. 5. 
CuEmnitzia (?) verusta. Tab. XV, fig. 7. 
_ Scarpurcensis. Tab. XV, fig. 8. 
Acton Sepevicr. Tab. XV, figs. 9, 9a. 
— PuLius. Tab. XV, fig. 11. 
ACTEONINA GLABRA. ‘Tab. XV, fig. 10. 
—~ TUMIDULA. Tab. XV, fig. 14. 
PHASIAVELLA LATIUSCULA. Tab. XV, fig. 16. 
Natica appucta. Tab. XV, figs. 17, 17 a. 
— (Eusprra) ctincta. Tab. XV, fig. 20. 
Trocuus LeckEenByI. Tab. XV, figs. 21, 21a. 
Part II. 
Myritus (Moprora) Lecxensyt. Tab. XIV, fig. 9. 
CUCULLHA CANCELLATA. ‘Tab. XIV, fig. 12. 
Unrtcarpium aipposum. Tab. XIV, fig. 11. 
TRIGONIA SIGNATA—DECORATA. Tab. XV, fig. 1. 
ASTARTE ELEGANS, Phil. (non Sow.). Tab. XIV, fig. 14. 
TsocaRDIA CORDATA. Tab. XV, fig. 5. 
Myacires Beant. Tab. XV, figs. lla, 0. 
--  Scarsurcensis. Tab. XV, fig. 13. 
—  maquatus. Tab. XII, fig. 15. 
Cornbrash of the Coast of Yorkshire: its Mollusca. 
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 Terebratula 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 
