70 



ME. A. W. WATERS OK TERTIARY CHILOSTOMATOTJS 



The lower edge of the aperture is straight, the upper rounded (0*1 

 millim. wide). There is an avicularium below the oral aperture, 

 and the avicularian chamber is much raised, so that the appearance 

 of these is sometimes almost like ovicells. The ovicells are usually 

 much concealed. Yicarious avicularia elongate, spatulate, scattered 

 all over the colony. This is related to C. pertusa and 0. fossa. 



Cellepora. 



There is a cylindrical Cellepora from Napier with zooecia irregu- 

 larly placed ; the oral aperture subrotundate with a wide sinus. 

 There are numerous avicularia scattered about, some are very large, 

 being the length of three or four zocecia ; the mandibular space is 

 acute. It is distinguished from C. yarraensis, Waters, by the shape 

 of the aperture. 



77. Rhynchopora longirostris, Hincks. (PL VII. fig. 22.) 



Rhynchopora longirostris, Hincks, Ann. & Mag. Nat. Hist. ser. 5, 

 vol. viii. p. 66, pi. iv. figs. 7, 8. 



Fossil, from Napier, adnate. Zooecia elongate, rising towards the 

 mouth with a very long raised avicularian rostrum. On some zooecia 

 there is a very narrow avicularium attached to the rostrum, with 

 the mandible directed towards the proximal part of the zocecium. 

 The oral aperture is suborbicular, with a wide round sinus. 



Rhynchopora bispinosa is a most variable species, and when it has 

 been properly worked up will probably have the longest list of 

 synonyms of any Eryozoon, and my first impression was that the 

 fossil belonged to that species. Being unable, however, to find any 

 denticles, and all the cells being equal in size without the peristome 

 rising on either side, I referred the fossil to Schizoporella ; but 

 receiving a recent specimen from Port Phillip, Australia, in which 

 the long rostrum was well developed, with a lanceolate avicularium 

 to almost every cell, and a slight elevation of the peristome on each 

 side, the species was again brought back to Rhynchopora. In the 

 recent form I am able to see in one or two zooecia a small denticle, 

 but cannot find one in most. This seems to be allied to Cellepora 

 longirostris, MacGK, and Schizoporella cryptostoma, MacG. 



Loc. Living: Curtis Island (#.); Port Phillip ("FT.). Fossil: 

 Napier. 



78. Ltjnulites petaloides, d'Orb. 



Lunulites petaloides, d'Orb., Waters, Quart. Journ. Geol. Soc. vol. 

 xxxix. p. 442, pi. xii. fig. 11 a, 6, c. 



There are several specimens from Shakespeare Cliff, Wanganui, 

 and in these the number of vibracula is very variable ; they are often 

 placed regularly for two or three rows, and in the rest of the colony 

 scattered irregularly. The aperture is 0'4 millim. wide. 



I do not see any reason for changing the generic name which has 

 now been used for so long and is so generally recognized, nor is 

 any advantage apparent in the alteration to Lunaria proposed by 



