Jones and Sherboni — Tertiary Entomostraca. 389 



swelling* of the anterior hinge-joint. Depressed on the front half, but 

 more convex behind. Surface ornamented with a neat open network 

 of delicate meshes, lying obliquely from the postero-dorsal to the 

 antero-ventral region. 



From the Belosepia-bed at Bracklesham. (Science Schools Coll.) 



14. Cythere Eeidii, sp. no v. 



Yalves sub-oblong, obliquely rounded at the ends, broader in 

 front than behind, straight on the back, slightly sinuous below, 

 nearly iiat ; rising into a median knob in the anterior third. Surface 

 with rather coarse punctation, making a rough reticulation. Named 

 after Mr. Clement Eeid, F.Gr.S., who collected this and many other 

 imdescribed Ostracoda from the Crag beds of Norfolk. From the 

 Weybourn Crag of East Eunton. (Museum of Practical Geology.) 



15. Cythere retifastigiata, Jones. 



Mr. Clement Eeid has met with a good example, with less pro- 

 minent ridges than in the figure in the ' Monograph,' 1856 (pi. iii. 

 fig. 7), and with a smaller, neater, and closer punctation. Weybourn 

 Crag. (Mus. Pract. Geol.) 



16. Cythere lacrymalis, sp. no v. 



One of the sub-oblong punctate CythenB, of a not uncommon 

 shape, but rather more oblique anteriorly than usual. Surface 

 slightly convex, swelling at the anterior third, and posteriorly 

 bearing two separate, short ridges, which rise near the middle of the 

 valve, and end each in a strong knob at the posterior border, thus 

 forming two long tear-shaped eminences, instead of the more usual 

 pair of posterior swellings, such as we see in C. hidentata, Bosquet, 

 Tert. Entom., 1852, p. 72, pi. iii. f. 9, and several other Tertiary 

 Cytheroe. From the Norwich Crag, Bramerton, collected by Clement 

 Eeid, F.G.S. (Mus. Pract. Geol.) 



17. Cythere dictyosigma, Jones. 



This was not figured in the ' Monogi'. Tert. Entom.,' 1856, p. 33 ; 

 but we hope to figure it shortly. We may remark that some of Dr. 

 G. S. Brady's illustrations of his Cythere mutabilis, ' Trans. Zool. 

 Soc.,' 1866, p. 377, pi. lix. fig. 14 (C. tuherculata, G. 0. Sars, Brady, 

 etc., Post-Tert. Entom., p. 164), approach very near to C. dictyosigma. 



18. Cythere angulata (G. 0. Sars), var. 

 Cythere aiigulata, G. S. Brady, Trans. Linn. Soe. vol. xxvi. p. 409, pi. 26, figs. 39-42. 



In some of their more important characters our little specimens 

 agree with Dr. G. S. Brady's definition of C. angidata ; but in them 

 we also see a strong afiinity to C. Umicola, Norman ; C. glohulifera, 

 Brady, and C. concinna, Jones, as described in full by G. S. Brady, 

 are also near allies. 



Our specimens were obtained by Mr. C. Eeid from the Norwich 

 Crag of Bramerton, and the Weybourn Crag of East Eunton ; and 

 are in the Mus. Pract. Geologj^. 



