Plate 18 



Fig. 1. Monoporella tenuimargo, new -peeies (p. 158). 



The unilamellar zoarium, X20, of large zooecia with thin mural rims. 

 D. 5574. Simaluc Island. 

 '_'. '■'>. ('nitcro/iora cr [xtitxa Marnier, 1926 (p. 162). 



2. The free bilamellar zoarium, X20. 



3. \n example, X20, with ovicelled zooecia. 



I). 5577; Mount Dromedario. 

 \. Macrppor a centralis MacGillivray, 1895 (p. 161). 

 Unilamellar fragment, 20. 

 I). ").")7 1. Simaluc [sland. 

 .">. t'i. Entinmiria coronata, new species (p. 164). 



."). Zooecia, X20, provided with a reticulocellarium. 

 6. < )vieelled zooecia, X20. 



I >. ")l 51 . Sirun [sland. 



(585) 



