PLATE LXXXVIII. 



PAGE 



Chonelasma lamella, F. E. S., . . . 321 



Fig. 1. Transverse section of a flat specimen preserved in alcohol (combination 

 figure) ; x 40. 



Fig. 2. Section, parallel to the surface, of a specimen preserved in alcohol ; x 40. 



Fig. 3. Dermal pentact with eehinated rays ; x 300. 



Fig. 4. Oxyhexaster wth long S-shaped terminal rays ; x 300. 



Fie. 5. Discohexact with rough ravs ; x 300. 



Fig. 6. Oxyhexact with rough rays ; x 300. 



Fig. 7. Dermal scopula with short unknobbed prongs ; x 300. 



Figs. 8, 9. Discohexasters with long rough terminal rays ; x 300. 



