PLATE XXII. 



PAGE 



Figs. 1-3. Aulascus johnstoni, F. E. S., . . . 118 



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



Fig. 2. Vertical section through the lateral wall of the specimen shown in fig. 1 

 (combination figure) ; x 30. 



Fig. 3. Autodermal hexact pinulus ; x 100. 



Figs. 4-9. Sympagella nux, 0. Schmidt, . .120 



Fig. 4. Somewhat damaged specimen, preserved in alcohol ; natural size. 



Fig. 5. Vertical section through the upper part of the Lateral wall of the specimen 

 shown in fig. 4 (combination figure) ; x 30. 



Fig. 6. Plumicome from the external trabecular framework near the gastral side ; 

 x450. 



Fig. 7. a, b, c. Roller stars (" Walzensterne," 0. Schmidt), reduced oxyhexasters ; 

 x450. 



Fig. 8. Autodermal peutact pinulus with a rudiment of the sixth proximal radial 

 ray ; x 100. 



Fig. 9. Autogastral hexact pinulus; x 100. 



