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2. Echinoidca, Bracliiopoda, and Lamellibranchia from the Upper 

 Cretaceous Limestone of Need's Gamp, Buffalo River. By 

 HENRY WOODS, M.A., University Lecturer in Palaeozoology, 

 Cambridge. 



Plate I. and three figures in text. 



AN account of the deposit from which the fossils here described 

 were obtained is given at the end of this paper (page 425). The 

 large specimens of Pcrna were found in the hard crystalline lime- 

 stone ; most of the other fossils came from the polyzoa-limestone. 

 No species giving decisive evidence of the horizon of the limestone 

 has been recognised, but the affinities of the forms described seem to 

 show that the deposit belongs to a late stage of the Chalk. 



ECHINOIDEA. 



COPTOSOMA CAPENSE, sp. nov. 

 Plate I., figs. 15-17. Text-figure 1. 



Test of medium size, with sub-circular outline, convex above, 

 flattened below, somewhat concave around the peristome ; height 

 equal to less than half the diameter ; greatest diameter in the 

 lower third. 



Apical disc rather small, not preserved. 



Ambulacra not quite as wide as the interarnbulacra. Poriferous 

 zones undulating. Pores unigeminal, except on the base of the test, 

 where they are bigeminal. Plates high, consisting of six fused 

 plates, with the six pairs of pores forming an arc. Each compound 

 plate bears a large primary, imperforate tubercle (either very slightly 

 or not at all crenulate), with a large areola, and a few small tubercles 

 and granules around the margin. The primary tubercles are largest 



