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



Parelpidia elongata, Theel. 

 Fig. 16. Four-armed deposits from the body-wall ; the arms about - 12 mm. long. 

 „ 17. Spicula from the pecbcels. 



Elpidia rigida, n. sp. 

 „ 18. Four-armed deposits from the body-wall ; the arms about 0"48 mm. long. 

 „ 19. Spicula and four-armed deposits from the pedicels. 

 „ 20. Deposits from the tentacles. 



Achlyonice lactea, n. sp. 



„ 21. Three-armed deposits with the longest arms about 0"22 mm. ; and a small 

 wheel measuring - 06 mm. in diameter. Taken from the dorsal perisoma. 

 „ 22. Deposits from the ventral perisoma. 

 ,, 23. Spicula from the pedicels. 



PLATE XXXIII. 



Kolga nana, Theel. 

 Fig. 1. Deposits from the body-wall, about 0"08 mm. long. 

 ., 2. Spicula from the pedicels. 



jEtyidia incerta, n. sp. 

 ,, 3. Four-armed deposits from the body-wall, with the arms from 0'06 mm. to 



0'16 mm. 

 ,, 4. Deposits from the pedicels. 



Peniagone atrox, n. sp. 

 ,, 5. Larger and smaller four-armed deposits from the body-wall ; the arms of the 

 largest deposits 0"12 mm. long. 



Elpidia ambigua, n. sp. 

 „ ti. Four-armed deposit with the arms 0"18 mm. long, and wheel, measuring 

 0"048 mm. in diameter. 



Scotoplanes insignis, n. sp. 

 ,, 7. Three-armed deposit and C-shaped bodies; the arms of the former 0"24 mm. 

 long, and the latter measuring about O'l mm. in length. 



Peniagone horrifer, n. sp. 

 ,, 8. Deposits from the pedicels. 

 „ 9. Four-armed deposits from the body-wall, with the arms about 0'06 mm. long. 



