162 



Pinna folium, Toting and Bird, Cardinia attenuata, Buck., &c. 

 This zone is well developed in Northamptonshire, as I have 

 examined fine specimens of Am. Ibex., Quenst., and Am. 

 hipunctata, Eom., collected near Watford. 



3. — The zone of Ammonites capricornus is well developed in 

 England, and wherever the Middle Lias is fully exposed the 

 laminated micaceous clays, often richly charged with the 

 peroxide of iron, representing this zone are found; in the 

 western escarpment of the Cotteswolds, as at Hewlitt's Hill, 

 near Cheltenham, at Witcombe Park, near Birdlip, and at 

 Mickelton Tunnel, near Evesham, it was at one time admirably 

 exposed, and where it contained a very rich fauna. On the 

 coast of Yorkshire, as at Staithes, and Boulby Cliff, this zone 

 attains a great thickness and yields a long list of organic 

 remains, 



EoSSIIiS PROM THE ZONE OP AMMONITES CAPEICOENUS 



IN Glotjcesteeshire. 



Cephalopoda. 



Belemnites umbilicatus, d'Blain. Ammonites Henleyi, Sow. 



II elongatus, Mill. » capricornus, ScMoth. 



II paxillosus, Schloth. « fimbriatus, Sow, 



Nautilus striatus, Soiv. » Davsei, So^v. 



Gasteropoda. 



Chemnitzia capricomi, Wr. Pleurotomaria Anglica, Sow, 



Cylindrites capricorni, Wr. « expansa, Sow. 



Troclius imbricatus, Sow. " undosus, Schiihl. 



CONCHIFERA. 



Pboladomya ambigua, Sow. Cypricardia cucullata, Gold/. 



II decorata, Hartm. Cardinia attenuata, Stutch. 



Pleuromya unioides, Eom. Goniomya capricorni, Wr. 



Leda rostralis, Lamk. Cardium truncatum, Phil. 



II complanata. Bom. Unicardium Janthe, d'Orb. 



II acuminata. Gold/. Cucullsea Miinsteri, Ziet, 



II inflexa, Eom. Area elongata, Quenst. 



Astarte capricomi, Wr. « truncata, Buclc. 



Mytilus hippocampus, Young & Bird. Modiola scalprum, Sow. 



