PLATE LXI. 



size. 



Fig. 3. Lougitudiual section perpendicular to the surface of the superior part of 

 the body, and of a part of the marginal fringe (combination figure) ; 

 x50. 



Fig. 4. Dermal meml^raue, view of the exterior side ; x 80. 



Fig. 5. Free, strong small hexacts and parts of diacts from the stalk ; x 100. 



Fig. 6. Portion of the skeleton of the stalk. The spicules beginning to be united 

 by a siliceous mass ; x 100. 



Fig. 7. Small discohexaster with numerous terminal rays ; x 450. 



Fig. 8. Portion of the skeleton of the stalk, strongly united by a siliceous mass ; 

 x 100. 



Fig. 9. Gastral pentact with rough, simply rounded rays, and a slightly pro- 

 jecting tubercle, representing the undeveloped sixth ray ; x 100. 



Fig. 10. Dermal pentact with rough, straight rays, club-shaped at the extremities, 

 and a rudiment of the sixth (distal) ray ; x 100. 



Fig. 11. Dermal tetract with rough, somewhat bent rays, club-shaped at the 

 extremities ; x 100. 



PAGE 



Crateromorpha meyeri, Gray, . . . .161 



Fig. 1. A specimen, well preserved in alcohol ; natural size and colour. 

 Fig. 2. Longitudinal section of the body and of a part of the stalk ; natural 



