MARINE POLYZOA. 99 



riform, entire, with a slight elevation on one side. Under sur- 

 face of polyzoary divided into hexagonal areas, each correspond- 

 ing to a cell. 



Hab. New Guinea. B.M. Collection. 



2. CUPULARIA OWENII. PI. CXV. 



Polyzoary orbicular, depressed ; area of cell rhomboidal, sub- 

 elongated ; lamina finely granular ; aperture irregular, margin 

 jagged; vibracular opening suboval, entire; under surface of 

 polyzoarium marked with bifurcating sulci, and each ridge with 

 a median line. 



Lunulites Owenii, Gray, Spicllegia Zoologica, pt. 1. p. 8. t. 3. 



fig. 15 (1828). 

 Hab. Coast of Africa. 



This species appears to differ from Lunulites denticulata 

 (Conrad, Sillimari's Journal, Oct. 1841, xli.) mainly in the more 

 depressed form of the polyzoary. But 1 think this difference is 

 quite sufficient to render the identity of the two forms more than 

 problematical. The American species appears, in respect of its 

 conical form and other characters, entirely to correspond with 

 what has been termed L. Owenii of the Coralline Crag ; and 

 Notwithstanding a former opinion to the contrary, I am now in- 

 clined, for several reasons, to believe that the fossil must 'be 

 regarded as distinct from the recent form. 



3. CUPULARIA LOWEI. PL CXVI. 



Polyzoarium irregular in outline; area of cell rhomboidal, 

 wide; no aperture; lamina cribriform or granular, or nearly 

 smooth, according to age ; vibracular opening auriform, entire, 

 with an elevation on one side ; mouth crescentic, with a straight 

 lip below, margin raised. 



Lunulites Lowei, Gray, MSS. 

 Hab. Madeira, Lowe. 



4. CUPULARIA STELLATA, n. s. PI. CXVIII. 



Polyzoarium orbicular, depressed, deeply serrated at the mar- 

 gin ; area of cell suboval or subrhomboidal ; lamina narrow and 

 smooth or wanting ; aperture oval or elliptical ; vibracular open- 

 ing small, with a prominent tooth on one side, below which is a 

 sinus. 



Hab. Philippine Islands. 



The cells are deeper than they appear in the drawing, and the 

 inner lamina should be less decidedly expressed. 



