202 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



PLATE 2 



Fig. 1. Membranipora hastingsae, new species. 



Fig. 2. M embranipora pachytheca, new species, with frontal ectocyst. 



The same, ectocyst removed. 



Membranipora tuberculata (Bosc), with tubercles, cryptocyst 

 and internal spinules. 



The same, young with partially developed tubercles. 



The same, with three elongate tubercles. 



Membranipora savarti (Audouin). 



Fig. 8. Membranipora perfragilis {MacGilMvray) . 



Fig. 9. Membranipora tenuis Desor. 



Fig. 10. The same, older stage of calcification. 



Fig. 11. Conopeum reiiculutn (Linnaeus), showing development of 

 tubercles on the basal gymnocyst. 



Fig. 12. Conopeum commensale Kirkpatrick and Metzelaar, with 

 ectocyst decorated with chitinous spinules. 



Fig. 13. The same, ectocyst removed. 



Figs. 14 and 15. The same, showing basal tubercles. 



