EXPLANATION OF PLATE XXXIX. 



Figs. i^ia. — Pterocyclos ahorensis, n. sp. Type. 



,, 2, 2a 26,2c. — ,, mtriensis, n. sp. Type. 

 ,, 3, 3«. — Spiraculum oakesi, n. sp. Type. 



,, 4, 4(7. — ,, kempi, n. sp. Type. 



5, 5«-— .• ,, large. Ponging. 



,. 6,6a,6h. — ,, planum, n. sp. Type, Upper 



Rotung. 



