38 Messrs. Jones and Kirkby on Carboniferous Entomostraca. 
it are given in pl. 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, 3855). At 
Visé, in Belgium, it is not rare in the white Carboniferous 
Limestone. 
1842. De Koninck.—In 1842 six species of Bivalved Ento- 
mostraca from the Carboniferous Limestone of Belgium were 
carefully figured and described by Professor Dr. L. de Koninck, 
of Liége, in his ‘ Description des Animaux Fossiles qui se trou- 
vent dans le Terrain Carbonifére de Belgique’ (4to, Liége, 
1842-44). At page 585, under the name Cythere Phillipsiana 
(pl. 52. fig. 1), we have the peculiar gibbous form cemmon 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 (pl. 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 paleontologist having been thereby 
misled im collocating the fossil carapaces with their recent 
analogues. At page 589 of M. de Koninck’s work, his Cyprella 
chrysalidea (pl. 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. 
