•'^42 Prof. T. Piupeit Jones on the 



and, besides other Crustaceans — Macrurous, Brachyurous, 

 and of doubtful affinities — he describes (pp. 30-40) and 

 figures (pL V. figs 3-46) numerous Ostracoda, including: — 

 (?lpridineUa, J. & K., 2 new species; Cypridellina, J. &K., 

 1 new species ; Cypridella^ L)e Koninck, 2 new species ; 

 Cyyridina^ Mihie-Edwards, 2 new species ; Philomedes, Lill- 

 jeborg, 1 new species ; Entovwconclius, M'Coy, 1 new species; 

 £ntomis, Jones, 2 new species. All these liave an exceed- 

 ingly close resemblance to the true Carboniferous species of 

 Britain and Belgium, and at first sight might in most in- 

 stances be taken tor them. 



12. Two small specimens of a true Cypridinal form have 

 been met with in the Permian Limestone of Sundeiland 

 (Monogr. Carbonif. Entom. 1874, p. 13, pi. ii. fig. 28) . Tiiej 

 closely resemble Cypridina primceva {Daphnia^ M'Coy), in 

 the Carboniferous Limestone. (Pi. XVI L fig. 5.) 



13. Having nothing definite to record as to the Cypridinids 

 that may have existed in the seas of the early Mesozoic 

 period, we arrive at the Upper Mesozoic series, certain 

 Cretaceous deposits of which, in Limbourg and Belgium, 

 }ielded to the researches of the late M. J. A. H. Bosquet, of 

 Liege, some small, rare, and fragile specimens, which he 

 referred to iJe Koninck's CypreUa, because Milne-Edwards's 

 figure of Cypridina Reynaudi showed no beak and notch. 

 iSee * M^moires de la Commission pour la Description de la 

 Carte Gdologique de la Neerlande,' vol. ii. (1854), p. 124; 

 they had been referred to Cypridina in the Monogr. Cretac. 

 Entom., Pal. Soc. 1849, pp. 3 and 36. 



Cypridina ovidata [CypreUa, Bosquet), " Descript. Entom. 

 foss. Craie de Maestricht," Mem. Soc. Boy. !Sci. Liege, 

 vol. iv. (1847) p. 373, ])1. iv. figs. 4 a, b, c. Carapace gib- 

 bose, boldly pitted, and bearing a large subradiate muscle- 

 spot. Length 2 millim., height l"4 millim., and 1*2 in 

 thickness. From the whitish Maestricht Chalk between Mont 

 iSt. Pierre and Petit Lanaye, and at Sichen, in Belgium. 

 Also in his " Monographic des Crustacees fossiles du Terrain 

 Cr^tac^ du Duciie de Limbourg " (Mtiin. Comm. Descrip. 

 Carte g^ol. Neerlande, vol. ii.), ]). 124, pi. ix. figs. 11 a, b, c. 

 (PI. XVn. figs. 3 a, 6.) 



Cypridina Koninckiana [CypreUa, Bosquet), ibid. 1847, 

 p. 373, pi. iv. figs. 5 a, b, c. Surface showing a large and 

 partly radiate muscle-spot, and on its hinder moiety a trian- 

 gular area of radiate punctation. Size 1*2 by '7 millim. 

 From the Maestrichian Chalk at Mont St. Pierre, Gronsveld, 



