38 Messrs. Jones and Kirkby on Carboniferous Entomostraca. 



it are given in pi. 22. figs. 23 & 24 of that work. In a pro- 

 visional notice of the Entomostraca of the Carboniferous period*, 

 we have been enabled to point out some of the relationships of 

 this curious fossil, in M'Coy's figures of which the hinge-line 

 is by mistake assigned to the anterior extremity. 



This fossil is known to us by specimens from the Carboni- 

 ferous Limestone of Cork, Kildare, Meath, and Limerick (Grif- 

 fith, D. Sharp, J. Wright, British Museum, Geological Survey) ; 

 Bolland, Yorkshire (Phillips, Morris) ; Park Hill, near Longnor, 

 Derbyshire (Geol. Survey) ; Lower Scar Limestone, Settle (Bur- 

 row) ; Braidwood Limestone, Carluke (Hunter) ; Carboniferous 

 shales of West Broadstone, Ayrshire (J. Young). The Rev. J. 

 Cumming found it in the Carboniferous Limestone of the Isle 

 of Man (Quart. Journ. Geol. Soc. vol. iii. pp. 322, 355). At 

 Vise, in Belgium, it is not rare in the white Carboniferous 

 Limestone. 



1842. De Koninck. — In 18 42 six species of Bivalved Ento- 

 mostraca from the Carboniferous Limestone of Belgium were 

 carefully figured and described by Professor Dr. L. de Koninck, 

 of Liege, in his ' Description des Animaux Fossiles qui se trou- 

 vent dans le Terrain Carbonifere de Belgique ' (4to, Liege, 

 1842-44). At page 585, under the name Cy there Phillipsiana 

 (pi. 52. fig. 1), we have the peculiar gibbous form common in 

 some of the beds of the European Mountain-limestone, and 

 which had been named Entomoconchus Scouleri by M'Coy in 

 1839. At page 587 De Koninck describes his Cypridina Ed- 

 wardsiana (pi. 52. fig. 2), and C. concentrica (fig. 4), and at 

 p. 588 his C. annulata (fig. 3) ; but the generic affinities are not 

 well determined, owing probably to the fact of the peculiar an- 

 tero-ventral notch in the valves of Cypridina having been omitted 

 in the engraving of Milne-Edwards's typical species (as explained 

 in the ' Monograph of the Tertiary Entomostraca of England,' 

 Pal. Soc. 1856, p. 9), and the palaeontologist having been thereby 

 misled in collocating the fossil carapaces with their recent 

 analogues. At page 589 of M. de Koninck^s work, his Cyprella 

 chrysalidea (pi. 52. fig. 6) is described, and his Cypridella 

 cruciata (fig. 7) at page 590. 



These Entomostraca occur also in Great Britain, as well as the 

 curious Crustaceans, Cyclus Brongniartianus, Kon., and C. ra- 

 dialis, Phillips, sp., described and figured in the same memoir, 

 but of obscure relationship. A form allied to the latter has also 

 been found by Mr. Joseph Wright in the Carboniferous Lime- 

 stone of Little Island, Cork, and by Mr. J. H. Burrow at Settle; 

 another belongs to the Magnesian Limestone of Sunderland ; 



* Report of the British Association, 1863, Sections, p. 80. 



