I f>S THE VOYAGE OF H.M.S. CHALLENGE!;. 



Scotoplanes globom, Theel. 

 Fig. 8. C-sliaped spicula, the largest 0"16 mm. long. 

 ,, 9. Straight spicula, the largest about 0"92 mm. long. 



Psychropotes semperiana, n. sp. 

 ,, 10. Three, four and five-armed deposits from the back with the arms from 



0"06 mm. to 0*16 mm. in length. 

 ,,11. Deposits from the ventral surface. 



Peniagone affinis, n. sp. 

 ,, 12. Four-armed deposits from the ventral perisoma, with the arms about 0'14 mm. 

 „ 13. Four-armed deposits from the dorsal perisoma, with the arms about 0'2S mm. 

 in length. 



Benthodytes papillifera, n. sp. 

 ,,14. Spicula, 0"44 mm. long, from the dorsal perisoma. 



Orphnurgus asper, Theel. 

 „ 15. Spicula from 0"14 to 0'2 mm. long, from the body-wall. 

 ,,16. Spicula from the pedicels. 



Peniagone vitrea, n. sp. 

 ,,17. Four-armed deposits from the body- wall, with the arms 0'16 mm. long. 

 ,,18. Deposits from the oral-disk. 



PLATE XXXV. 



Psychropotes loveni, n. sp. 

 Fig. 1. Four-armed deposits from the ventral perisoma, with the arms about 0" 13 mm. 

 long. 

 „ 2. Four-armed deposits from the outer layer of the dorsal integument, with the 



arms about 0"26 mm. long. 

 „ 3. Four-armed deposits from the inner layer of the dorsal integument, with the 

 arms about 0'18 mm. Ions. 



Benthodytes typica, n. sp. 

 ,, 4. Spicula from the body-wall. 



Euphronides depressa, n. sp. 

 „ 5. Four-armed deposits from the dorsal perisoma, the largest having the arm 



about 0"24 mm. long-. 

 ,, 6. Deposits from the ventral perisoma. 



