ZONE OF 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.^ 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 Daraesii, Wright. Garden Cliff; Leicestershire; Warwickshire; Hildesheim, N. Germany. 



Avicula contorta, Portlock. 



— solitaria, Moore. 

 Lima precursor, Quensf. 

 Modiola minima, Goldf. 

 Placunopsis alpina, Moore. 

 Plicatula intusstriata, Emmerich. 

 Gervillia prsecursor, Quenst. 

 Pecten Valoniensis, Defrance. 



— Rheeticus, Merian. 

 Pleuromya Crowcombeia, Moore, 

 Myophoria inflata, Emmerich. 



Cylindrites elongatus, Moore. 

 — fragilis, Bunker. 



Lamellibuanchiata. 



Pleurophorus elougatus, Moore. 

 — angulatus, Moore. 



Anatina prajcursor, Quenst. 



— Suessii, OjjpeL 



— elongata. 

 Schizodus depressus, Moore. 



— elongatus, Giimbel. 



— conceutricus, Moore. 

 Cardium Rhaeticum, Merian. 

 Cypricardia Suevica, Oppel. 

 PuUastra arenicola, Strickland. 



Gasteropoda, 



Ghemnitzia alpina, Dittmar. 

 — granum, Dittmar, 



Crustacea. 



Cypris ? liassica, Brodie. 



Estheria minuta, var. Brodieana, Jones. 



Pollicipes Rhaeticus, Moore. 

 Tropifer lEevis, Gould. 



Pisces. 



Acrodus minimus, Agass. 

 Saurichthys apicalis, Agass. 



— acuminatus, Agass. 

 Sargodon tomicus, Plieninger. 

 Nemacanihus monilifer, Agass. 



— filifer, Agass. 

 Gyrolepis tenuistriatus, Agass. 



— Alberti, Agass. 

 Hybodus pyramidalis, Agass. 



Plesiosaurus. 



Hybodus minor, Agass. 



— plicatilis, Agass. 



— Iseviusculus, 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. 



