PLATE XXII. 



Hexaorinus interscapulars, Phillips, sp. (Page 190.) 

 Fia. 



1. A rather worn specimen, showing the anterior, left anterior, and left posterior 



radials, with suture-lines excavated either naturally or in cleaning. 1 a, 

 ventral view (anal side lowest). Wolborough. Vicary Collection. 



2. Left posterior view of a specimen, with very depressed dome (H. depressus, 



Austin), with deep and wide suture-lines, caused probably by the decay of 

 the surface. 2 a, ventral view, showing the arrangement of the plates of 

 thetegmen (anal side to the left below). Wolborough. Museum of Practical 

 Geology. 



Hexaorinus macrotatus, Austin. (Page 192.) 



3. Right anterior view of a specimen with very much obliterated surface. 



3 a, ventral view, showing the position of the arms, and indistinctly the 

 plates of the tegmen. (Anal side to the right below.) Wolborough. 

 Torquay Museum. 



4. Side view of another specimen, showing ornament though rather worn. 4 a, 



dorsal view. Wolborough. Vicary Collection. 



5. Dorsal view of a smaller specimen, showing the first joint of the column. 



Lummaton ? Torquay Museum. 



6. Posterior view of Austin's type specimen, in which the surface ornament is 



totally obliterated. The cup is a good deal compressed, the dimensions of 

 the side view being almost the same as those of fig. 3. Wolborough. 

 Museum of Practical Geology. 



7. Posterior view of another compressed specimen, with obliterated surface, 



showing radial and anal plates. Wolborough. Torquay Museum. 



8. Side view of a worn specimen, showing the large radial and one of the 



secundibrachs (probably the specimen from which Austin's figure of 

 H. macrotatus ('■) tl), and perhaps also Phillips's figure of H. tuberculatus were 

 taken, but, if so, much injured since they were drawn. Wolborough. 

 Museum of Practical Geology. 



Hexaorinus perarmatus, Whidborne. (Page 194.) 



'.'. A specimen showing the ornamentation ; the anal plate seen to the right. 

 9 a, ventral view, showing plates. 9 b, anal plates. 9 c, right anterior 

 radial, supporting the axillary plate and large secundibrachs. Wolborough. 

 Vicary Collection. 



10. Another specimen, showing anal plate, defective above. Wolborough. 



Museum of Practical Geology. 



Eexacrinus ornatus, (1<>I<Ij'iiss } sp. (Page 195.) 



11. Sidt; view of a calyx, defective above. 11 a, dorsal view. Wolborough. 



Museum. 



