163 PROP. T. RUPERT JONES ON THE [May 1894, 



This is a small, somewhat peachstone-shaped Ostracod, probably 

 a Cytheropteron, judging by its shape, more especially of that division 

 of the genus embracing the G. concentricum, var. virginea, J. 1 (of 

 the Chalk), and the recent C. depression and 0. leave, B. & N. 2 The 

 specimen under notice, however, though very small, is relatively 

 much fuller and more nearly rotund than the recent forms. 



The carapace in side view is nearly oval, but subacute in front, 

 and quite sharp behind. The back has a semicircular curve and a 

 sharp edge. The ventral margin is broad, arcuate in profile, and 

 deeply sunken along its centre, where the edges in meeting make a 

 slight ridge within an inverted arch. The edge view is acute-oval ; 

 the end view trigonal and broadly obcordate. 



This little fossil Ostracod has a distant resemblance to the cara- 

 pace of a Metacypris in some points as to shape, but its relationship 

 to Cytheropterou is much closer. 



It is probably Liassic, occurring with figs. 10, 11, and 12, and is 

 here named after the enthusiastic veteran geologist, my respected 

 friend, the Rev. P. B. Brodie, F.G.S., who collected the specimen 

 many years ago somewhere in the Bristol district. 



EXPLANATION OF PLATE IX. 



(The figures are all magnified 20 diameters.) 



Fig. 1. Darwinula liassica (Brodie). a, right valve, large individual ■ b, right 

 valve, small individual ; c, edge view of carapace. Pylle Hill, Bristol. 



Fig. 2. Darwinula liassica (Brodie), var. major, nov. Left valve. Pylle Hill. 



Fig. 3. Darwinula globosa (Duff). Left val\e. Linksfield. 



Fig. 4. Darwinula globosa (Duff'), a, left valve ; b, muscle-spot. Linksfield. 



Fig. 5. Darwinula globosa (Duff), var. striata, nov. Left valve. Linksfield. 



Fig. 6. Cytheridea ellipsoidea (Jones), a, left valve ; b, right valve ; c, dorsal 

 view of carapace. Westbury-on-Severn? 



Fig. 7. Cytheridea Moor ei, sp. nov. a, right valve; b, left valve; c, edge view 

 of carapace. Beer- Crow combe, Somerset. 



Fig. 8. Cytheridea Moorei, sp. nov. a, left valve ; b, edge view of carapace. 

 Long Itchington, Warwickshire. 



Fig. 9. Cytheridea, sp. Right valve. Near Bristol. 



Fig. 10. Cythere retieostata, sp. nov. Right valve, imperfect. Near Bristol. 



Fig. 11. Cythere Wilsoni, sp. nov. a, left valve; b, ventral aspect of cara- 

 pace ; c, end view of carapace. Near Bristol. 



Fig. 12. Cythere, sp. Dorsal view of carapace, not quite perfect. Near 

 Bristol. 



Fig. 13. Cytheropterou Brodiei, sp. nov. a, carapace showing right valve ; 

 b, carapace placed obliquely, with the right valve uppermost; c, dorsal 

 aspect of carapace ; d, end view of carapace. Near Bristol. 



Discussion. 



The President complimented the Author on this further addition 

 to the history of the Ostracoda, so many of his papers on this 

 subject having already enriched the Quarterly Journal. The 



1 Suppl Monogr. Cret. Entom., Pal. Soc. 1890, p. 31, pi. ii. figs. 14-17. 



2 Trans. Roy. Dubl. Soc. ser. 2, vol. iv. (1889) pp. 210, 218, etc. 



