CYPRIDINA. 



15 



Length 3-4 ; height y; thickness inch. Proportions 10 : 7 : 4. 



A grey shell in grey Carboniferous Limestone, Cork, Ireland ; collected by Mr. Joseph 

 Wright, P.G.S. It differs from C. primmva in its straight ventral edge, large open sinus, 

 and small gape ; and it is dedicated to its discoverer, one of the most enthusiastic of col- 

 lectors and students of the Carboniferous and other fossils of Ireland. To Mr. Wright's 

 energy and liberality we owe a very considerable portion of the large number of the 

 Carboniferous Cypridinads, besides other Entomostraca, that have come under our 

 examination. 



4. Cypridina Bradyana. Sp. nov. Plate II, figs. 13 a, b, c. 



Carapace-valve gently gibbous, subovate in outline, truncate in front, where the sinus 

 cuts away, as it were, the lower portion of a semicircular curve, leaving a strong trian- 

 gular beak and a perpendicular margin beneath it. Yet the gape or fissure does not 

 seem to have been large (fig. \2> b). A slight local elevation or faint knob is expressed in 

 the antero-dorsal region, somewhat modifying the otherwise symmetrically convex outline 

 of that part of the valve. This slight tubercle is not without its meaning in relation to 

 the far more extensively tuberculate and swollen CijprideUcB and Ci/prideUina hereafter 

 to be noticed. End-view of carapace suboval ; edge-view acute-ovate. 



Lengthy; height \; thickness -^2. Proportions 9| : 6 : 4. 



This species, represented by a grey shell in grey limestone, differs markedly in 

 contour and in form of " notch " from C. Wrigldiana and its other associates in the 

 Carboniferous Limestone of Little Island, Cork. It was also collected by Mr. Joseph 

 Wright, E.G.S. ; and it is named after our acconiphshed friend, Mr. G. S. Brady of 

 Sunderland, who has favoured us with much help in the study of these and other 

 fossil Entomostraca. 



5. Cypridina brevimentum. Sp. nov. Plate II, figs. 15 — 19. 



Carapace compressed egg-shaped; valves varying in outline from oval (figs. 15 and 

 16) to oval-oblong (figs. 17 — 19) ; arched or curved on each margin, though sometimes 

 nearly straight below ; elliptically and often obliquely curved behind ; broadly convex on 

 the dorsal line ; deeply cut by a sinus in front, with the lower (antero-ventral) region sloping 

 away downwards and backwards with a curved outline. The smaller (younger) and most 

 oval specimens (fig. 16, &c.) have the greatest loss in this region, and the relatively most 

 projecting beak ; and thus present an even more chinless outline than the larger indi- 



