42 TERTIARY ENTOMOSTRACA OF ENGLAND. 



2. Xestoleberis aurantia (Baird). Var. Jones 8f Sherbom. Plate III, figs. 23 a, b. 



Xestoleberis aurantia, Brady, CrossJcey, and Robertson. Monogr. Post-Tert. 



Entom., Pal. Soc, 1874, p. 191, pi. xvi, 

 figs. 32, 33 (full synonymy is there given). 

 — — var., Jones Sf Sherbom. Geol. Mag., 1887, p. 456. 



Except in being minutely punctate, and not distinctly papillose, this specimen 

 (from Headon) closely resembles the recent X aurantia above quoted. 



From the Fluvio-marine deposits of Headon Hill, Isle of Wight. Collected by 

 the late F. E. Edwards, and now in the British Museum. 



XVI. LOXOCONCHA, G. 0. Sars, 1865. 



1. LOXOCONCHA TAMARINDUS {Jones). 



Cytherideis taharindtts, Jones. Monogr. Tert. Entom., 1857, p. 49, pi. iii, 



figs. 4 a, b. 

 Loxoccotcha — Brady. Trans. Linn. Soc, vol. xxvi, 1868, p. 435, 



pi. xxv, figs. 45 — 48 ; Jones, Geol. Mag., 



1870, p. 157. 



This species occurs in the White Crag of Suffolk, and it has been found at 

 several places in the North Atlantic and the English Channel. Some of the 

 recent specimens prove it to belong to Loxoconcha (Brady, loc. cit.). (Brit. Mus.) 



XVII. PSEUDOCYTHERE, G. 0. Sars, 1865. 



1. PSEUDOCYTHERE ATTENUATA, Jones. 



Cythere attenuata, Jones. Monogr. Tert. Entom., 1857, p. 28, pi. v, fig. 11. 

 Cttherura — — Geol. Mag., 1870, pp. 156, 158. 



This probably belongs to the genus Pseudocythere of G. 0. Sars (' Forhandl. 

 Vidensk.-Selskab. Christiania,' Aar 1864 (1865), p. 87) ; see also G. S. Brady's 

 ' Report Challenger,' &c, 1880, p. 144. 



One specimen was obtained from the clay-bed " No. 29," of Prof. Prestwich's 

 section at Alum Bay, at the base of the Barton Clay (' Quart. Journ. Geol. Soc.,' 

 vol. ii, 1846, p. 257, pi. ix, fig. 1 ; also ' Quart. Journ. Geol. Soc.,' vol. xliii, 1887, 

 pp. 132, 138, &c). (British Museum.) 



