MARINE POLYZOA. 101 



the lower margin ; margin granular ; vibracula trifid at the ex- 

 tremity ; under surface of polyzoary grooved, ridges punctured 

 with a single row of openings. 



Lunulites capulus, Busk, Voy. of Rattlesnake, i. pi. 1. figs. 13, 14. 

 Hab. Off Cape Capricorn, Macgillivray. 



3. LUNULITES PHILIPPINENSIS, n. s. PI. CXIII. figs. 1, 2, 3. 



Polyzoarium suhconical, serrate at the edge, flat beneath and 

 porous, pores umbilicate ; opening of cell pyriform, margin not 

 raised ; vibracular opening minute, circular. 



Hab. Philippine Islands. 



4. LUNULITES CANCELLATA, n. s. PI. CXIII. figs. 4,5, 6, 7. 



Polyzoarium conical, raised, flat beneath and the centre perfo- 

 rated by numerous umbilicate openings ; internally cancellated ; 

 opening of cell circular, with a simple raised margin ; vibracular 

 openings minute, oval, oblique. 



Hab. Philippine Islands. 



This species and the one immediately preceding are very 

 curious forms and would appear to constitute a peculiar group, 

 characterized by the circumstance that the concave side of the 

 polyzoary is more or less filled up by a cancellated structure. 



3. SELENARIA, n. g. 



Only a certain number of cells dispersed throughout the 

 polyzoary furnished with vibracula. The front of each cell, so 

 furnished, covered by a cribriform calcareous expansion ; others 

 arched above, contracted below; under surface of polyzoary 

 marked with grooves. 



1. SELENARIA MACULATA, n. s. PI. CXVII. 



Polyzoary orbicular, on section crescentic ; vibracula contorted, 

 finely ringed. 



Lunulites maculata, Busk, Voy. of Rattlesnake, i. pi. 1. figs. 15, 



16. 

 Hab. Bass's Strait. 



