CYPRIDINELLA. 



23 



collected at Little Island, Cork, by Mr, Joseph Wright, F.G.S. ; and Mr. W. Grossart, 

 of Salsburg, has been so fortunate as to meet with several good specimens, and, indeed, 

 gregarious masses, of this species in the light-grey Lower Carboniferous Limestone at 

 Bathgate, Linlithgowshire. Like many other Bivalve Entomostraca, this species 

 evidently constitutes a large proportion of its limestone mass. Mr. Burrow has also 

 found this specimen in the Great Scar Limestone at Settle, Yorkshire. 



The shells of some specimens in the Bathgate Limestone are marked with numerous 

 minute, round, and vermicular white spots (fig. 7 d), beneath the smooth surface originally, 

 both wearing away into roughness. Whether this be due to decay of structure or to 

 parasitical borings we have not determined. 



3. Cypridinella clausa. Sp. nov. Plate III, figs. 3 a — c. 



Carapace ovato-globose, indented in front with a broad shallow sinus and a very narrow 

 notch, retreating obliquely upwards ; bluntly pointed behind, with a slightly upturned 

 apex, somewhat like the posterior angle of Dana's Ci/pridina punctata and others. Side- 

 view subovate ; edge-view acute-ovate ; end-view broad-obovate. 



Length \; height \; thickness inch. Proportions 8:5-^:5. 



A grey cast in the limestone of Little Island, Cork ; collected by Mr. J. 

 Wright, F.G.S. C. clausa occurs also at Middleton, Co. Cork. 



4. Cypridinella Bosqueti. Sp. nov. Plate III, figs. 6 a, b, c. 



Carapace egg-like, very gibbose, almost equal-ended, but the front is excavated, high 

 up, with well-marked sinus and notch, overhung by a small, neatly curved beak. Side- 

 view ovate ; edge-view broad-oval ; end-view suborbicular, slightly flattened at the top. 



Length \; height y; thickness \ inch. Proportions 11:7:8. 



Somewhat Kke Cypridina Norvegica and C. Zelandica in general style, but more 

 egg-shaped, too gibbose, with too much prow, and too small a gape, to resemble either 

 closely. 



This very neatly egg-shaped Cypridinella, represented by a cast from the white Upper 

 Mountain-limestone of Vise, Belgium, sent to us by M. J. Bosquet, F.C.G.S., of Maestricht, 

 we dedicate to him. By his liberality and friendly co-operation M. Bosquet has enabled 

 us to study a large series of the typical Belgian Entomostraca, and bring them, as in 

 this case, into direct comparison with our British specimens. 



C. ovalis, superciliosa, clausa, and Bosqueti, have the ventral border semicircular or 

 elliptical, with the anterior edge curved boldly upwards- The next group we have to 



