20 



CARBONIFEROUS ENTOMOSTRACA. 



12. Cypuidina scoriacea., 7. and K. Plate 11, figs. 3 « — d: 



■Cypridina scoriacea, J. and K., 1871. Trans. Geol. Soc. Glasgow, vol. iii, Suppl., 



p. 27. 



Carapace-valve oblong, compressed ; ends rounded ; one is broader than tbe other, and 

 has a very slight but decided notch and projection near the top. Surface reticulate, with 

 irregular hollow meshes, coarser towards the centre, which give the valve a rough 

 scoriaceous appearance. (The lines traversing the surface in the fig. 3 a are cracks in 

 the shell.) 



Length \; height ^; thickness ^2 i'^ch. Proportions 11 : 8 : 4. 



This is a somewhat crushed dark-brown specimen in a small ironstone concretion 

 from the "Upper Limestone-shale," 202 fathoms below the Ell Coal, at Gare, near 

 Carluke. In Dr. Rankin's collection. 



Cypridina scoriacea and C. Thomsoniana in the high position of the notch resemble 

 C. (?) luteola, Dana, but not in other respects. 



13. Cypridina oblonga. Sp. nov. Plate V, figs. 12 a — c. 



Carapace subquadrate, compressed ; valve oblong, slightly convex above and below, 

 broader and flatter in front, narrower and more convex behind. A faintly marked and 

 almost closed notch is apparent high up on the anterior margin. A very faint tubercle 

 marks the middle of the valve. End-view acute-ovate ; edge-view blunt and narrow- 

 lanceolate. 



Length ^ ; height ; thickness iiich. Proportions 12:7:5. 

 Collected by Mr. J. Wright, E.G.S., in the Carboniferous Limestone of Little Island, 

 Cork. 



On account of its general form this specimen was at first associated with Bhombina, 

 but it wants the antero-dorsal projection and the retiring antero-ventral line, and its 

 obscure notch was ultimately discerned. Cypridina scoriacea {supra) is one of the few 

 compressed Cypridince that ofier any features for comparison. 



