loG Trof. Rupert Jones — Tertiary Entomostraca. 



difficulties ("On the Crustacean Fauna of the Salt-marshes," etc., 

 Nat. Hist. Trans. Northumb. and Durham, 1868, p. 7). Mr. Brady 

 has detected C. lacustris (Sars) also among the specimens from 

 Grays. 



No. 11. Owing to the poorness of the published figures of the 

 German specimens, my friend Mr. Brady is unwilling to accept 

 Miinster's appellation for the Cijihere rejoresented by me under this 

 name of "punctata" and refers it (op. cit. p. 401) to Cytliere con- 

 vexa, Baird. For my part, however, I think we shall not err in 

 retaining the old name. Cypridina pimctatella, Ess. (Cytliere 

 punctatella, Bosq.), referred to in the synonomy at p. 24 of my 

 Monograph, belongs to Loxoconcha, according to Mr. Brady. 



No. 13 is doubtless a Cytheropteron, Sars (Brady, op. cit. p. 447). 



No. 14. This has the hinge-characters of LoxoconcTia. It is from 

 the Headon series (Upper Eocene Series) of Colwell Bay. 



No. 17. This has the shape of a Cytlierura, Sars (Brady, op. cit. p. 

 439). 



No. 18. The doubt with which this was referred to Eeus's C. 

 Kostelensis was confirmed when a better figure of that species was 

 published by Egger. I propose to call the Woolwich specimen C. 

 amissa. Its generic relationship is doubtful. 



No. 21. Brady's Gythere mutahilis (Trans. Zool. Soc, 1866, p. 377, 

 pi. 59, fig. 14), a British recent form, is near to this. 



No. 23. My name for this cannot stand, as another and somewhat 

 similar species has been so called by Eeuss. I ]Dropose suhlacunosa 

 as a fitting name for the Suffolk species ; indeed, this was the term 

 intended, as I find by my old notes. This form has many allies ; for 

 instance, some recent Norwegian specimens are mentioned in my 

 Monograph (p. 31) as being of the same species; and these have 

 been referred by Mr. Brady (who at first thought them to be 

 varieties of Eeuss's C. clathrata and C. lyrata, and Speyer's C. 

 latimarginata) to Sars' C. angulata, ahyssicola, and tuberculata (op. 

 cit. pp. 406, 409, and letters). 



No. 26. C. plicata is found abundantly in the Upper Eocene of 

 Colwell Bay ; and its variety laticosta is plentiful in the Middle 

 Eocene of Barton and Highcliff. 



No. 28 is from the Upper Eocene of the Isle of Wight. 



No. 30. C. limicola, Sars (Brady, op. cit. p. 405) is the recent 

 Norwegian reiDresentative of C. trachypora, referred to in my 

 Monograph, p. 36. 



No. 31. Brady's Cytliere emaciata (op. cit. p. 414), from the 

 British Coasts, is a close ally of this form. 



No. 32. Near to this is C. bicostulata, Speyer (Ostrac. Cassel. Tert. 

 1863, p. 27, pi. 3, fig. 6) ; but it has the more pronounced features 

 of a stronger form. 



No. 36. Mr. Brady [op. cit. p. 418) merges this in the recent 

 British species, C. Jonesii, of Baird, published about the same time as 

 Bosquet's Memoir, 



No. 37 is from the Upper Eocene of the Isle of Wight, and the 

 Middle Eocene of Bracklesham. 



