PLATE XXXVIII. 



Pkrioyclus suispiJCATii.is, (i. 0. (kid-. 



Fig. 1 (I. Ijateral view of an imperfect individual wiiicli is not (niite so large as 

 others that have been obtained at the same locality. 1 h. Peripheral view of the 

 same. 2. Sutnre-lines from another individual. St. Doulagh's. Woodwardian 

 Museum, Cambridge. (Page 142.) 



Pn]([('Y('i,iis FoojfDi, '■/. n. Oriel-. 



Fig. -i a. Lateral view of a remarkably fine specimen with some of the test 

 preserved. 3 b. Front view of the same, k Suture-lines from a .smaller individual. 

 Cloghran. British Museum. (Page 14L) 



Pericyciais kunatus, J. So ire rh I/, sp. 



Fig. 5. Tjateral view of the distorted and im])erfect ty]ie specimen. Hlacki-oek. 

 British Museum (" Sowerby Collection "). (Page 1:54.) 



