EXPLANATION OF PLATE XXXVIII. 



Fig. 1. — Cidaris conferta, sp. no v. Photograph of the holo- 

 type from the Eastern Slope, Bass Strait, 80-200 

 fathoms. Abactinal view. Two-thirds natural size. 



Fig. 2. — Actinal view of same specimen as Fig. 1. 



Fig. 3. — Side view of same specimen as Fig. 1. 



Fig. 4. — Basal third of a large spine from the specimen shown 

 in Fig. 1. Four times natural size. 



