PLATE XXXVIII. 



Peeicyclus subplicatilis, G. G. Cricl'. 



Fig. 1 a. Lateral view of an imperfect individual which is not quite so large as 

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

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

 Museum, Cambridge. (Page l-i2.) 



Pericyclus Foordi, (J. (J. Grid: Jjk 



Fig. 3 a. Lateral view of a remarkably fine specimen with some of the test 

 preserved. 3 /;. Front view of the same. 4. Sutnre-lines from a smaller individual. 

 Cloghran. British Museum. (Page 141.) 



Pericyclus punatus, .7. Soirerbi/, sj). 



Fig. 5. Lateral view of the distorted and imperfect type specimen. Blackrock. 

 British Museum (" Sowerby Collection "). (Page 134.) 



