APPENDIX. 55 



Cythereis Icenica-quadrata, nov. Common. 



— Lonsdaleana, Jones. 



— spinicaudata, nov. 

 Oytheridea perforata {Bomer). 

 Pseudocythere ? simplex, 7iov. Not rare. 

 Cytlieropteron concentricum (Beuss). Common. 



— concentricum-virgineum, Jones. Common. 



— Sherborni, nov. Common. 



— umbonatum-longispinatum, nov. 



— alatum-forte, nov. 



— cuspidatum, nov. 



— cuspidatum-tricuspidatum, nov. 



— pedatum (Marsson). Common. 

 Cytherella ovata (Bomer). Common. 



— Muensteri (Bomer). Not rare. 



— Williamsoniana, Jones. 



— Williamsoniana-granulosa, Jones. 



V. — OSTEACODA PROM TEE FlINT-MEAL OE THE ChALK, AnTRIM. COLLECTED BY Mr. 



Joseph "Wright, F.Gr.S. 



Paracypris siliqua, nov. 

 Bairdia subdeltoidea (Mnnster). Common. 

 Macrocypris siliqua, Jones. 

 — Wrightii, nov. 



Bytliocypris ? lernica, nov. 

 Cy there Harrisiana, Jo7ies. 

 Cythereis ornatissima (Beuss). 



— ornatissima-reticulata, nov. 



— ornatissima-nuda, 'nov. 



— vallata, ^iov. 



— spinicaudata, nov. 



Cytheropteron concentricum (Beuss). Rather common. 



— concentricum-virgineum, Jones. 



— umbonatum-acanthopterum (Marsson). 



— alatum-robustum, noo. 



— alatum-forte, nov. 



— phyllopterum (Bosquet). 



— cuspidatum-montuosum, 'ihov. 



