PLATE 51. 



TRIPOCALPIDA, PHJJNOCALPIDA et CYRTOCALPIDA. 



1 ) iai u. Pa ge 



Fig. 1. Tripterocalpis phyttoptera, n. sp., . . . x 400 1138 



Fig. 2. Tripterocalpis conoptera, n. sp., . . . x 300 1138 



Fig. 3. Tripterocalpis ogmoptera, n. sp., . . x 300 1138 



Fig. 4. Tripterocalpis ogmoptera, n. sp., . . . . x 500 1138 



A group of confluent pores, more enlarged. 



Fig. 5. Tripterocalpis ogmoptera, n. sp., . . . . x 300 1138 



Central capsule. In the centre the striate podoconua, above it four oil- 

 globules, to the right the nucleus. 



Fig. 6. Tripocalpis triserrata, n. sp., . . . x 600 1136 



Fig. 7. Tridictyopus conicus, n. sp., . . . . x 300 1145 



Fig. 8. Tridictyopus vatillum, n. sp., . . . . x 400 1145 



Fig. 9. Cyrtophormis spiralis, n. sp., . x 400 1166 



Fig. 10. Archicorys ovata, n. sp., . . . . x 300 1185 



Fig. 11. Cyrtocalpis gromia, n. sp., . . . . . x 400 1188 



Fig. 12. Archicorys microstoma, n. sp., . . x 400 1185 



Fig. 13. Cyrtocalpis urceolus, n. sp., . . x 500 1186 



The ovate central capsule exhibits in the lower half the podoconus, in the 

 upper half the spherical nucleus and three oil-globules. Between 

 the capsule and the shell numerous xanthellae, partly protruded 

 through the shell-mouth along the radiating pseudopodia. 



