Descriptions of New, or Little Known, Polyzoa. 119 



Fig. 4. Cellepora serratirostris, natural size. Fig. 4a. A group of 

 cells from the edge of the zoarium. Fig. 4§. Group of older 

 cells. Fig. 4c. Single cell, showing the pore formed by the 

 growth of the peristome, and a short aviculiferous process. 

 Fig. Ad. One of the peculiar large avicularia, with broad 

 mandible. 



Fig. 5. Cellepora megasoma. Fig. 5a. Group of cells showing 

 ovicells and avicularia. Fig. bb. Small group more highly 

 magnified. 



Fig. 6. Cellepora rota, two young cells. Fig. 6a. Older cells and 

 ovicells. Fig. 66. Vertical view of single cell, showing the 

 form of the mouth. 



Plate IV. 



Fig. 1. Cauda tenuis, natural size. Figs, la and 15. Anterior 

 and posterior views of the same magnified. 



Fig. 2. Carbasea reticulum, anterior view of cells, showing also an 

 avicularium. Fig. 2a. Posterior view to show the large 

 branched spines, not so much magnified. The outlines of the 

 cells are not shown, as they were obscured with mud. 



Fig. 3. Microporella diadema, var. lunipuncta. 



Fig. 4. Microporella diadema, var. longisjjina. 



Fig. 5. Microporella diadema, var. lata. 



Fig. 6. Microporella diadema, var. canalicidata. 



Fig. 7. Microporella scaadens. 



Plate V. 



Fig. 1. Tubulipora lucida. 

 Fig. 2. Diastopora bicolor. 



