50 



MR. A. W. WATERS ON TERTIARY CHILOSTOMATOTTS 



a fossil with a very large, much raised ovicell, both broader and 

 longer than the length or width of a zooecium, I now think that I 

 made a mistake in uniting Lepralia japonica of Busk with this 

 species, although the)' are no doubt closely allied. 



The operculum of the recent specimen from New Zealand is thick, 

 membranous, not chitinous, except at the borders, and has two 

 lateral projections directed towards the basal wall of the zooecium, 

 showing similarity, in this respect, to Membranipora and Cellaria. 

 It is about 0-35 mm. wide. 



Loc. Living: New Zealand (A. W. W. coll.). Fossil: Mount 

 Gambier, Waurn Ponds, Aldinga and River-Murray Cliffs (Aus- 

 tralia), Napier, "Waipukurau and " Whakati " (New Zealand). 



17. Moxoporella disjuncta, Manz. (PL VI. fig. 8.) 



Lepralia disjuncta, Manzoni, Bry. Plioc. Ital. cont. la, Denkschr. 

 Ak. Wissensch. Wien, vol. lix. 1869, p. 5, pi. i. fig. 8, and Bri. del 

 Plioc. di Castrocaro, p. 26, pi. iii. fig. 35. 



? Lepralia urceolata, H utton, Manual of New Zealand Moll. 1880, 

 p. 192. 



? Lepralia Auingeri, Ess. Poss. Bry. (Est. Ung. p. 166, pi. viii. 

 fig. 2. 



Zoarium adnate. Zoc^cia subovate, distinct, not very much raised, 

 surface covered with very minute granulations. Four spines above 

 the oral aperture, which is large, rounded above, straight below 

 (0-25 mm. wide). 



This I at first called Monoporella crassatina, W., var. micrograna, 

 but it seems to bo identical with the disjuncta. of Manzoni, and this 

 and the last species no doubt are related to M.polita, Norm. 



Loc. Living : New Zealand ? Fossil : Pliocene, Castell-Arquato, 

 Castrocaro (Italy) ; Napier (New Zealand). 



18. Monoporella waipttktjrensis, sp. nov. (PI. YI. fig. 11.) 



Zoarium adnate. Zocecia oblong, distinct, arranged in parallel 

 series. Oral aperture (0*15 mm.) about half or a third of the 

 width of the zooecium, straight below, rounded above, with an umbo 

 below the aperture. Ovicell small, globular, raised ; surface of 

 zooecium and ovicell punctured. 



The figure of Lepralia rubens, Stimpson, looks like this species, 

 and the fossil is no doubt closely allied to Cyclicopora pralonga, 

 Hincks ; but from comparison of specimens in my collection they do 

 not seem to be identical. 



Loc. Napier, Waipukurau cutting, and Trig's Station. 



19. Steganoporella neozelanica, Busk. 



Vincularia neozelanica, Busk, Quart. Journ. Micr. Sci. n. s. vol. i. 

 p. 155, pi. xxxiv. fig. 5. 



Steganoporella neozelanica, Hincks, Ann. & Mag. Nat. Hist. ser. 5, 

 vol. ix. p. 82, pi. v. fig. 9. 



It is exceedingly difficult to distinguish S. magnilabris and S. 

 neozelanica without the opercula, and the determination of fossils 



