PLATE LXXXVT. 



PAGE 



Aphrocallistes ramosus, F. E. S., . . . 319 



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



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



Fig. 3. Dermal pentact with a knob-like rudiment on the sixth (distal) ray ; 

 X 300. 



Fig. 4. Dermal hexact with club-like pronged distal ray ; x 300. 



Fig. 5. Dermal scopula with geniculate knobbed prongs ; x 300. 



Fio-. 6. Oxyhexaster whose principal rays in one axis are somewhat longer than 

 the others ; x 450. 



Fig. 7. Simple oxyhexact with rough pointed rays ; x 450. 



Fig. 8. Dermal hexact pinulus ; x 300. 



Fig. 9. Dermal scopula with straight knobbed prongs ; x 300. 



Fig. 10. Discohexaster with one elongated axis, whose principal rays are of un- 

 equal lengths, while the other four short rays are undivided ; x 450. 



Fig. 11. Oxyhexaster with one elongated axis, whose principal rays are of unequal 

 lengths, while the other four short rays are undivided ; x 450. 



