150 THE VOYAGE OF H.M.S. CHALLENGER. 



Elpidia willemoesi, n. sp. 

 Fief. 2. Side view ; natural size. 

 „ 3. Ventral view ; natural size. 



Peniagone affinis, n. sp. 

 „ 4. Ventral view; natural size. 

 ,, 5. Dorsal view ; natural size. 



Enypniastes eximia, n. sp. 

 „ 6. Ventral view ; natural size, b, the anterior brim or appendage ; m, mouth ; 



t, tentacles. 

 „ 7. Dorsal view; natural size, a, anus; b, the anterior brim or appendage, 

 which is penetrated by a number of wide canals lying side by side. 

 (Owing to the highly macerated materials, the figures of this animal are most defective). 



Psycheotrephes 1 exigua, n. sp. 

 Fig. 8. Ventral view ; twice the natural size. 



PLATE IX. 



Peniagone naresi, n. sp. 

 Fig. 1 . Side view ; natural size, a, the left dorsal ambulacrum, giving off branches 

 to the large appendage. 

 „ 2. Ventral view ; natural size. 

 (The posterior portion of the only individual I have seen is torn off, wherefore the 

 figures are defective). 



Scotoanassa diaphana, n. sp. 

 Fig. 3. Ventral view; natural size, a, the anterior brim; b, the posterior brim with 

 the pedicels in its margin. 

 ,, 4. Side view ; natural size. 

 „ 5. Dorsal view ; natural size. 



Peniagone challengeri, n. sp. 

 ,, 6. Ventral view ; natural size. 

 ,, 7. Side view ; natural size. 

 ,, 8. Dorsal view ; natural size. 



1 This seems a more correct name than Psychotrephos, used on the plate. 



