PLATE XC. 



PAGE 



Figs. 1-7. Chonelasma dcederleinii, F. E. S., 324 



Fig. 1. A specimen preserved in alcohol, from a photograph ; natural size. 

 Fig. 2. Transverse section of the body (combination figure); x 50. 

 Fig. 3. Part of a dermal hexact pinulus ; x 300. 

 Fig. 4. Uncinatum : x 100. 



Figs. 5, 6. Dermal scopulas with barbed unknobbed prongs ; x 300. 

 Fig. 7. Small discohexaster ; x 450. 



Figs. 8-11. Chonelasma s,^., . . . 326 



Fig. 8. Transverse section of a thick fragment ; natural size. 

 Fig. 9. Cross section of another macerated specimen ; natural size. 

 Figs. 10, 11. The two sides of a thick fragment, from photographs ; natural size. 



