ZONE OP AVICULA CONTORTA. 



13 



The Contorta-beds have likewise been found in Warwickshire, Staffordshire, and 

 Leicestershire, also at Colin Glen, near Belfast, and in other localities in Ireland. 1 The 

 sections discovered in these counties and Ireland closely resemble those already described. 

 The following list contains the fauna special to the Avicula-contorta-zowe : 



ECHINODERMATA. 

 Ophiolepis Damesii, Wright. Garden Cliff; Leicestershire; Warwickshire; Hildesheim, N. Germany. 



Lamellibranchiata. 



Avicula contorta, Portlock. 



— solitaria, Moore. 

 Lima precursor, Quenst. 

 Modiola minima, Goldf. 

 Placunopsis alpina, Moore. 

 Plicatula intusstriata, Emmerich. 

 Gervillia precursor, Quenst. 

 Pecten Valoniensis, Dcfrance. 



— Rhseticus, Merian. 

 Pleuromya Crowcomheia, Moore. 

 Myophoria inflata, Emmerich. 



Cylindrites elongatus, Moore. 

 ■ — fragilis, Hunker. 



Cypris ? liassica, Brodie. 



Estheria minuta, var. Brodieana, Jones. 



Pleurophorus elongatus, Moore. 

 — angulatus, Moore. 



Anatina prsecursor, Quenst. 



— Suessii, Oppel. 



— elongata. 

 Schizodus depressus, Moore. 



— elongatus, Giimbel. 



— concentricus, Moore. 

 Cardium Rhaeticum, Merian. 

 Cypricardia Suevica, Oppel. 

 Pullastra arenicola, Strickland. 



Gasteropoda. 



Chemnitzia alpina, Dittmar. 

 — granum, Dittmar, 



Crustacea. 



Pollicipes Rhseticus, Moore. 

 Tropifer leevis, Gould. 



Pisces. 



Acrodus minimus, Agass. 

 Saurichthys apicalis, Agass. 



• — acuminatus, Agass. 



Sargodon tomicus, Plieninger. 

 Nemacanthus monilifer, Agass. 



— filifer, Agass. 



Gyrolepis tenuistriatus, Agass. 



— Alberti, Agass. 

 Hybodus pyramidalis, Agass. 



Plesiosaurus. 



Hybodus minor, Agass. 



— plicatilis, Agass. 



— lseviusculus, Agass. 

 Ceratodus altus, Agass. 



— trapezoides, Plien. 



— emarginatus, Agass. 



— gibbus, Agass. 



— latissimus, Agass. 



— obtusus, Agass. 



Reptilia. 



Ichthyosaurus. 



1 Portlock, 'Geol. Report, Londonderry,' pp. 126-127, 1843; Tate, ' Quart. Journ. Geol Soc.,' vol. xx, 

 pp. 105-107, 1864. 



