BRY0Z0A FROM NEW ZEALAND. 



49 



older parts there is a thick calcareous deposit between the cells, so that 

 the mouth is buried at the bottom of a deep cavernous opening, and in 

 the raised calcareous part there are numerous triangular avicularia. 



A number of the chief characters remind us of Khynchopora pro- 

 funda, MacGillivray (New or Little-known Polyzoa, pt.iii. p. 2, fig. 8), 

 and possibly some of the characters are hidden by the calcareous 

 growth in MacGillivray's specimen. I should not ha^e been able to 

 make out all the characters from the fossils, but, having seen them in 

 recent specimens, the fossils became quite clear. 



Log. Living : New Zealand. Fossil : Napier (N. Z.) . 



14. MoXOPORELLA CAPENSIS, Busk. 



Amphiblestrum capense, Busk, ' Challenger ' Report on the Poly- 

 zoa, p. 67, pi. xxiii. fig. 3. 



Such a form as the present shows at what a great disadvantage 

 the palaeontologist is placed in consequence of being unable to fiud 

 out the form of the Bryozoal covers, for there are many species of 

 Membranipora resembling the present species in the shape of the 

 opening ; but these, such as M. dentata, M. angidosa, &c, have a 

 small opercular aperture in the membrane covering the opesia. In 

 this species, on the other hand, the opening is entirely closed by a 

 subcircular or elliptical operculum. 



In a recent specimen in my collection, from Algoa Bay, South 

 Africa, the zoarium is erect, cylindrical, or subcompressed, just as 

 figured by Busk, and some cells have the two spines as described ; 

 but the majority are without spines, and in none of the fossils do I 

 find any traces of them. The Napier and Waipukurau fossils are both 

 adnate, whereas the one from Shakespeare Cliff is a flat bilaminate 

 fragment. Opesia of all 0*3 mm. wide. Both Flustrellaria tubu- 

 losa, d'Orb. (Pal. Fr. pi.. 727. fig. 10), and Biflmtra PrazdJci, No^ak 

 (Bohm. Kreide, p. 18, pi. iii. figs. 20-25), are closely allied to this. 



Log. Living : Simon's Bay, Cape of Good Hope (B.) ; Algoa Bay 

 ( W.). Possil : Waipukurau, Wanganui, and Napier. 



15. Monoporella capensis. B., var. dentata, nov. (PI. VIII. fig. 39.) 



There is a specimen from Napier which, on account of a curious 

 structure, it may be best to regard as a variety. In the upper 

 part of the zooecium there appear to be two denticles extending 

 some little distance below the aperture, but these are only a pro- 

 longation of a tube from one zooecium to another ; in the middle of 

 this tube is the rosette-plate. The distal rosette-plate is, in many 

 cases (as, for example, Lepmlia foliaGea), in the middle of what we 

 may call a rosette-tube ; but I know of no other instance in which 

 it is prolonged in this way. 



16. Monoporella crassatina, Waters. (PI. VII. fig. 15.) 



Monoporella crassatina, Waters, Quart. Journ. GeoL Soc. vol. 

 xxxviii. p. 270, pi. vii. fig. 8 ; ibid. vol. xxxix. p. 435, and vol. xli. 

 p. 291. 



Having seen a recent specimen from New Zealand, and having 

 Q. J. G. S. No. 169. e 



