Professor- T. Rupert Jones — Cretaceous Entomostraca. 75 



C. faha (sGG Reiiss's remarks on tliis point in tho '•' Zcitsch. d. g. 

 Ges.," 1855, vol. vii., p. 278), and thurororo must liavo another 

 name. I register it as 6'. simulata. 



6. Ci/fhereis interrupta (Bosquet). Monogv., p. 16, According to 

 my friend M. Bosquet, this is decidedly diricrent from his species. 

 It requires therefore another name. As Cythcreis is now merged by 

 G. S. Brady in Cz/there, on anatomical grounds (Mon. rec. Brit. 

 Entora., p. 401), I term this well marked species Ci/there Ilarrisiana, 

 after Mr. Harris, F.G.S., of Charing, to whoso researches we were 

 indebted for the specimens. 



7. Cijthcreis Gaultina (Jones), Monogr., p. 17, is a Gijthere. 



8. Cythereis macrophthahna (Bosquet). Monogr., p. 17. This also 

 is a Cytliere for the reason above given. M. Bosquet doubts if it be 

 the same as his species ; but I see no reason to hesitate in the deter- 

 mination, looking at the English and foreign specimens. 



9. Cythereis tripUcata (Eoemer). Monogr., p. 18. A well marked 

 Cythere, 



10. Cythereis quadrilatera (Eoemer), Monogr., p. 18. Another 

 Cythere. M. Bosquet doubts its being distinct from the next 

 mentioned ; but I prefer to keep them separate, as their j'oung forms 

 differ. 



11. Cythereis ciliata (Eeuss). Monogr. p. 19. Dr. Eeuss having 

 shown his specimens to M. Bosquet, the latter has decided that 

 C. ornatissima (Ess) and C. ciliata (Ess), are the same ; and, as 

 " ornatissima " precedes the other name, it must be adopted. 



12. Cythereis Lonsdaleiana (Jones), Monogr., p. 20. A good 

 Cythere. 



13. Cythereis cornuta (Eoemer). Monogr., p. 21. M. Bosquet has 

 taken much trouble v^^ith this form. He thinks it cannot be Eoemer's 

 " cornuta,'' and probably with reason. It may be registered as a 

 variety of Cythere ornatissima. 



14. Cythereis alata (Bosquet). Monogr., p. 21. This Cythere 

 retains its name. 



15. Bairdia suhdeltoidea (Milnster), Monogr., p. 23. Name un- 

 altered. In this, as in other cases, the Tertiary and Eecent forms 

 referred to in the Monograph as being of the same species require 

 complete revision. Mr. G. S. Brady has described some of them as 

 distinct ; and the Eev. A. M. Norman has determined the " narrow 

 variety" from Arran to be also distinct {B. inflata). 



16. Bairdia siliqua, and two varieties (Jones). The large form, 

 or B. siliqua proper, is a Macrocypris, near to M. Minna, Baird, sp. 



Var. a is also probably a Macrocypris, and I am inclined to place 

 it with Miinster's " Cythere arcuata," as M.{7)arcuata, Miinster, sp. 



Yar. yS is a different form altogether, possibly a Paracypris, 

 resembling " C. arcuata, var. gracilis," Bosquet. It may be 

 registered as Paracypris C^) gracilis. 



17. Bairdia Harrisiana (Jones). Monogr., p. 25. Stands good. 

 M. Bosquet thought he recognized this form in his Cytheridea 

 Harrisiana (Crust, foss. Limbourg, p. 63, pi. 5, fig. 5), but Mr. 

 Brady shows he is wrong (Trans. Zool. Soc, 1866, p, 363). 



