271 



and mouth, and the structure of the cell-walls are sufficient to di- 

 stinguish it from Cribrillina. As the onlj way to draw attention 

 to it is to give it a name, I propose to form for it provisionally, 

 until its nature is better understood, a genus named 



PUSTULARIA. 



Cells ovate, four- or five-angled, convex, crowded together side 

 by side, forming a crust without any definite form ; the cells closed, 

 their entire parictes being pierced with numerous close uniform mi- 

 nute pores ; the cavity simple ; aperture small, roundish, simple at 

 the front end of the cell (without any ovarial cells?). 



1. PUSTULARIA ROSEA. 



The crust rose-red, rather rugose. 

 Hub. Mediterranean. 



8. Notk on the Egg of " The Mooruk " (Casuarius Ben- 

 nettii, Gould), from New Britain, in the British Mu- 

 seum. By Dr. J. E. Gray, F.K.S., etc. 



(Aves, PI. CXLIV.) 



The British Museum having obtained from Mr. Samuel Stevens 

 the egg of the Mooruk from New Britain (sent to him by Mr. 

 Turner, which he wished to exhibit to the Society before he deli- 

 vered it into the Collection), I aminduced to send the following ob- 

 servations on it. 



The egg is of the same form and has the same solid shell, covered 

 with rounded tubercles, as that of the Common Cassowary, Casua- 

 rius galeatus. 



It differs from the egg of the latter bird in the Britisli Museum 

 in being rather larger (it is 144 inches in circumference in the 

 longest, and 11^ inches in the thickest part), in the tubercles on 

 the surface being larger, considerably further apart, and more iso- 

 lated, that is to say, more rarely confluent together. 



The egg is pale olive-green with darker olive tubercles ; it is much 

 darker than what I recollect of the eggs of the Cassowaries in other 

 collections; but they may have become faded, as is the case with 

 our specimens in the British .Museum. 



Mr. Bennett sent with the living specimen of the Mooruk now 

 exhibited in the Menagerie, which be bo liberally presented to the 

 Society, an egg which was brought from New Britain with the 

 hird. This egg has been presented by him, through the Society, to 

 the British Museum. 



This egg differs very considerably from that exhibited by Mr. 

 Stevens: first, in being smaller, that is to say, only 13] inches in 

 circumference in the longest and 11 inches in the thickest part; 

 secondly, in the egg being blunter, more rounded in trout, and not 



