PLATE LXXV. 



PAGB 



Farrea clavigera, F. E. S., . - . . 287 



Fig. 1. A damaged specimen, preserved in alcohol ; natural size. 



Fig. 2. Transverse section of the tube-wall (combination figure); x 80. 



Fig. 3. Dermal clavula with rounded head, showing two parallel circ4es of small 

 spines and a little knob on the top ; x 450. 



Fig. 4. Gastral clavula with four long teeth ; x 450. 



Fig. 5. Club-shaped dermal clavula with a little knob on tlie top ; x 450. 



Fig. 6. Foreign extrinsic intruded spicule, not belonging to this species. 



Fig. 7. Oxyhexaster with long principal, and small terminal rays ; x 450. 



Fig. 8. Dermal oxypentact with knotty rays and a small distal tubercle, repre- 

 senting the lost sixth ray ; x 100. 



