PLATE IV. 



i. PUxaura ?ata n. sp. Group of 5 spicules, a, b, c, d, e. 112. 



,r;ir<i attenuata n. sp. Group of 3 spicules, a, b and c. 112. 

 PUxaura recta n. sp. Group of 3 spicules, a, b and c. ■ 112. 



4. PUxaura platy stoma n. sp. Group of 3 spicules, a, b and c. < 112. 



5. PUxaura pinnata n. sp. Group of 4 spicules, <?, $, c, d. 112. 



6. PUxaura flava n. sp. Group of 4 spicules, u, b, 1, d. 112. 



7. EupUxaura rubra n. sp. Group of 3 spicules, a, b and c. 112. 



luplexaura mollis n. sp. Group of 4 spicules. a, b, c and d. ■ 112. 

 9. EupUxaura reticulata n. sp. Group of 4 spicules, «, £, c, </. 112. 

 10. Hicksonella princeps n. sp. Group of 6 spicules, <7. /', c, d, e and ^. 112. 



,1 and <!> represent one of the two genera! types, and the rest the other, or tuberculate type. 



