PLATE XXXV. 



PAGE 



Fig. 1. Axinella erecta (off Nightingale Island, Tristan da Cunha) ; natural 



size, ........ 183 



Figs. 2, 2a, 2h, 2c. Axinella erecta, a series of small specimens (Station 148a); 



natural size, . . . . . . .182 



Fig. 3. Phakellia ventilabrum, ya,i: C07inexiva ; x §, . . .170 



Fig. 3a. Portion of osculum-bearing surface of same specimen, to show oscuJa ; x 2. 



Fig. 4. Axinella arborescens; x f, . . . . . .178 



Fig. 4a. Portion of a branch ; x 2. 



