The Voyage of H.M.S."Challen^er” 
Tetractmellida, PL XIII 
8 , 
TH. Thomas Hel. 
W.J.Sollas dir. 
F.HutK.LitK'Edin: 
Fig!l-29, ANTHASTRA COMMUNIS. 
30 - 40, ANTHASTRA 
PARVISPICU LA. 
