iW^nP^''' 
TH.Xhoraas ie\. 
M^fatlane JcErsKine.LitHf Edin*' 
W.J. Sollas dir. 
The Voyage of H.M.S. “Challenger.”. 
Tetractinellida. PI. VHl. 
Fig? 1- 8. TH EN EA FENESTRATA. 9-10, THENEA DELICATA. 
11-20, THENEA WRIGHTIl. 21-22, THENEA SCHMlDTll. 
23, THENEA, sp. 24-39, THROMBUS CHALLENGERl. 
