HEXAUTINELLIDA. 



PLATE U8. 



Fig. 1 — 25 Hyalonema ( Hya/onema) tenuifitu/m n. sp. 1, 3 — 10, 20, 22, 23, 25 specimen b; 2, 11—19, 21, 24, specimen a. 



Fig. 26 —33 Hyalonema (Hyalonema) spec, from station 4G56. 



Lendenfeld photographed. 



Phototype by Ch.irles Bcllmaim, Prague. 



