552 REVISION OF THE AXINELLID^, ii. 



Fif,'.2. — Siifma.iia Jfaht//afa Carter: (portion of a) longitudinal section of 

 the skeleton peipendicnlar to the plane of the sponge-lamina; ( x 3). 



Fig.3. — Sii/maA'ia Jlahdlatri Carter; portion of the section sliown in the 

 preceding figiue, more highlj- magnified; ( ^ 18). 



Plate xxxvii. 

 Dra;/ma.Lua rariahi./is Whitelegge. 

 Fig. 1. — Skeleton as shown in a thin section parallel to and in the midplane 

 of the sponge-lamina at its upper margin; from a typical specimen; 



( X ].}). 



Fig. 2. — Skeleton as shown in a tliin longituninal section perpcntlicular to 



the sponge-lamina at its upper margin; from a typical specimen; 



( X 1.5). 

 Fig.3. — Skeleton (of an entire piece of the sponge-lamina) showing the 



arrangement of the dense multi -fibrous axes or "tunes' and their 



ultimate resolution into single filjres; ( x 1^). 



Plate xxxviii., tigs. 1-4. 

 Figs. 1 , 2, 3, 4. — A//an>op/iora rirforkina, sp.nov. ; photograph of portions 

 of the surface of different specimens, showing the mode of disposi- 

 tion of the dermal poves. 



