74 CARBONIFEROUS ENTOMOSTRACA. 



9. Cytherella .equalis. Sp. nov. Plate VI, figs. 14 a, b; 15«, b; 16 a, b. 



The carapace, as with C. recta, is smooth and oblong, with round ends, but it is 

 nearly cylindrical; the dorsal and ventral edges vary a little in their parallelism and 

 their compression. The edge-view differs from that of C. recta in being relatively thicker, 

 and more equal at the ends, although the three examples figured vary among themselves. 

 Fig. 14 b is compressed oval; fig. 15 b is subovate, compressed, and more convex poste- 

 riorly; and fig. 16 b has a marked medial convexity, but neither of its ends is acute. 



Length -6; height *28 ; thickness '24 mm. Proportions 15 : 7 : 6. 



Fig. 14 is sketched from a specimen collected by Dr. H. B. Holl, F.G.S., in the 

 Carboniferous Limestone of Great Orme's Head, North Wales. Another specimen, with 

 a more cuneiform profile, and one much more convex, have since turned up in his 

 collection. 



Figs. 15 and 16 represent some specimens from the Upper Limestone Series at 

 Gare, 1 near Carluke, collected by Mr. John Young, F.G.S., of Glasgow. 



10. Cytherella Tatei, Jones. Plate VII, figs. 1 a, b, c. 



Cytherella Tatei, Jones. Proceed. Berwickshire Naturalists' Club, vol. x, 1884, 

 p. 323, pi. 2, figs. 1 a, b, c. 



Carapace-valves small, subovate, smooth, broad (high) in front, convex medially, but 

 more compressed forward than behind. Breadth (height) equal to about two thirds of 

 the length. Profile or edge-view lanceolate ; end-view short-ovate. 



Length "72 (one specimen *75); height *46; thickness -36 mm. Proportions 

 18: Hi: 9. 



Collected by the late Mr. G. Tate, F.G.S., of Alnwick, in the Lower Mountain- 

 limestone group at Lamberton, Berwickshire. In the Alnwick Museum. 



11. Cytherella ? inflata (Minister), Jones 8f Kirkby. Plate VII, figs. 2 a, b. 



Cythere inflata, Miinster. Jabrb. fur Min., &c, 1830, p. 65, No. 17. 

 Cytherella ? inflata, Jones #• Kirkby. Ann. Mag. N. Hist., 1865, ser. 3, vol. xv, 



p. 408, pi. 20, figs. 8 a—c. 

 — Jones Sf Kirkby. Trans. Geol. Soc. Glasgow, vol. ii, 1867, 

 p. 218 ; and vol. iii, 1871, Supp., p. 28. 

 A., Y., Sf R. Catal. W.-Scot. Foss., 1876, p. 44. 

 ? — H. Woodward. Catal. Brit. Foss. Crust., 1877, p. 109. 



' Catal. W.-Scot. Fossils,' 1876, p. 73. 



