110 Prof. T. Rupert Jones — Fossil B waived JEnio)nostraca. 



V. OSTRACODA FROM THE SUBWEALDEN BoRING IN SuSSEX. 



1. Cypridea Valdensis (Fitton). Plate III. Figs, 13-15. 



In a bluish limestone of the Purbeck series in the boring at Lime- 

 kiln Wood, Netherfield, near Battle, Sussex, from the depth of 85ft., 

 we have numerous specimens of single and double valves of Ostra- 

 coda, mostly Cypridea Valdensis of the common ovate form, i.e. 

 tapering behind with a postero-dorsal slope. They are slightly 

 indented at the posterior angle; and all have the antero-ventral 

 notch. In all these particulars they differ from the ohlong and 

 slightly notched individual figured by Fitton. Some are shorter 

 than others, and relatively higher ; more like a peach-stone in out- 

 line ; and are such as is represented in fig. 28, pi. 5, Appendix, 

 " Monog. Foss. Estherige." Analogous forms, together with still 

 squarer valves, occur in the hard thin shales of the Weald Clay at 

 Peasemarsh, near Guildford, Surrey ; but the notch is obsolete, or 

 even absent, in these. These, with the specimen figured in Fitton's 

 pi. 21, fig. 1, may be termed Cypridea Austeni. 



2. Cypridea granidosa (Dunker). [Not Cythere'? granulosa, 

 (Sow.)] Plate III. Fig. 16 ; magnified 20 diameters. 



This elongate-ovate, notched, and somewhat tuberculate Cypridea, 

 answers well to Bunker's fig. 31a, b, pi. 13, Cypris granidosa, p. 60, 

 of his "Monogr. Nordd. Weald." 1846. It is rarer in the Nettlefield 

 Limestone than its associates. 



3. Candona? vel Cythere ? Plate III. Fig. 12 a, b; side and edge 

 views of a carapace ; magnified 20 diameters. 



This small, neat, smooth carapace, elliptic-oblong in outline, with 

 a straight dorsal (?) edge, also occurs in the Subwealden limestone 

 at 85 feet. It is impossible to define its genus at present. 



4. In specimens from the Subwealden Boring, with which I was 

 favoured, in 1872-3, by Mr. H. Willett, F.G.S., and his colleagues 

 in the enterprise, I found as follows : — 



Depth 84 feet. — Greenish limestone, having smooth fracture, with a greyish granular 

 Cypridiferous limestone in cracks of the denser portion. Cypris ? (one) sub- 

 trigonal and very delicately striolate, in the granular portion. Candonce (?) 

 suboblong and smooth, on a bed-face of the greenish portion. 

 Depth 85 feet. — Greenish-grey earthy Cypridiferous limestone, rich with Chara also. 

 Cypridea Valdensis, C. granulosa, etc. (See above.) 

 Chara seed-vessels and stems. 

 Depth 92 feet. — Grey earthy Cypridiferous limestone, consisting of layers of Cyprids 

 with intercalated thin seams of hard shale ; and with granular (Cypridiferous) 

 limestone filling cracks. 

 C^/^Aere?— oblong (new), and another ? 

 Miniite black vegetable stems. 

 Depth 96 feet. — Greenish-grey Cypridiferous limestone, consisting of alternate 

 layers of Cyprids and shale. 

 Cythere? oblong. (Like that at 92 feet.) 

 Depth 103 feet. — Dark-grey earthy limestone, with minute, black concretionary (?) 



and vegetable (carbonized) specks. 

 Depth 136 feet.— Grey, hard, Cypridiferous, banded limestone, like those from 

 92 feet and 96 feet, but harder, and with its structure more obscure. Holes 

 and cracks in it have been filled with a more granular limestone. 

 5. — In a black shale from Archer Wood, near Battle, also com- 

 municated by Mr. "Willett, F.G.S., were numerous specimens of the 

 ovate Cypridea Valdensis, but not well preserved. 



