PLATE IV 



Fig. i. Pyura discoveryi (Herdman). St. 27. Right : a single specimen. 



Left: two specimens growing together, xij. 

 Fig. 2. P. setosa (Sluiter). St. 175. Specimen growing on a stone; the 



test has been damaged at one place, x f . 

 Fig. 3. Eugyra arnbackae sp.n. St. 366. Intact specimens, x f . 

 Fig. 4. Pyura bouvetensis (Michaelsen). St 1952. Specimen with thin 



papery test, x f . 

 Fig. 5. P. bouvetensis (Michaelsen). St. 181. Specimen with leathery 



wrinkled test, x f . 

 Fig. 6. P. legumen (Lesson). St. 52. x J approx. 

 Fig. 7. P. georgiana Michaelsen. St. 123. x f . 



