BY WILLIAM A. HASWELL, M.A., B.SC. GG7 



near the distal end is a prominent triangular flap. The distal 

 surface is oblique, directed towards the dorsal aspect of the 

 animal. It is nearly circular, with a slight bay or indentation in 

 the middle of the dorsal side, and is surrounded by a rim formed 

 by a large number of closely apposed, flattened calcareous spines 

 forming a sort of miniature palisade. 



The greater part of the surface is concave and is paved with 

 two or four smooth calcareous plates ; towards the dorsal border 

 is a deep pit in which is articulated a large mesial, dorso-ventrally 

 compressed, hollow spine, with a broad base and a rounded apex. 

 Along the dorsal border of the distal surface on either side of 

 this mesial spine is a row of either four, or, more usually, five 

 smaller spines, the size of which increases from the inner towards 

 the outer end of the series. Each, excepting the last (most 

 external), is shaped like an ordinary hand-saw, but tapering 

 towards the extremity, which is slightly curved, and with the 

 teeth few and relatively large ; the fourth or fifth (most external) 

 pair, however, have no teeth. 



The dorsal setae are similar to those of Pomatoceros elaphus, 

 minutely feathered on one side and with a very fine tapering 

 extremity. The ventral uncini have from twelve to fifteen 

 subequal teeth. 



The discrepancies in the descriptions and figures of this species 

 in the memoirs quoted above depend doubtless on their having 

 been for the most part taken from dried specimens. The oper- 

 culum figured in the paper by Baird quoted above, and described 

 in the explanation of the plate as that of Galeolaria decumbens, 

 but not referred to in the text, is the operculum of the present 

 species; the palisade-like structure of the rim has been over- 

 looked. 



8. Vebmilta bo sea. 



[Plate, XXXIL, figs. 2-5.] 



Galeolaria rosea, Val., M.S. 



Vermilia rosea, Qcatref., I.e., p. 532, pi. XX.. figs. 10 and 11, 



? Eupomatus Boltoni, Baird, I.e., p. 12, pi. II., fig. 10 (lS6o.) 



