PLATE ^XXII. 



1. Erisocrinus iuegalobrac]iius. 



I a. View of base of calyx of t3'pe. 

 lb. Side view of tj'pe. 



2. Ccrioc?'iniis? monticitlatiis. Side view of t3'pe. 



3. OUgoporus? minutits. Top view of t3'pe showing the arrange- 

 ment of the ambulacra. 



4. JSTxalina? cxasperata. Left? view of tj'pe. 



5» Posidonoiiiya? pertenuis. Left? valve of t3'pe. 

 6. Posidononiya? recuj-va. y,; 



6a. Left? valve of type. 



6b. Right? valve of another specimen, a cast. 

 6c. Left? valve of the above with a portion of the shell left 

 on one side, which shows the surface markings. The 

 beak is somewhat crushed and twisted so that it does 

 not appear to extend above the hinge. 



