20 ■ 1S\\. A. W. Waters on Bryozoa from 



Smittia jinpsfans (Hincks). 



Mucrnnella jyiyrManx, Ilincks, Ann. & Mag. Nat. Ili.st. ser. 5, vol. x. 



p. 90, pi. vii. lifT. 1 (1882); Waters. Quart. Joiun. (lool. Soc. 



vol. xliii. p. 50; MacG. Tert. Polyzoa ^'ict. p. 98, pi. xiii. fifr. G. 

 Miicrone'/a ilupUcntd, Waters, Quart. Journ. Geol. Sue. vol. xxxvii. 



p. 328, pi. xvi. figs. 4, o ; op. cit. vol. xxxviii. p. 200. 

 Lepralia aitrjela, Ilutton, Manual of New Zealand Mollusca, p. 191. 



There are 15-lG tentacles, and ovaria very near the 

 growing ends. 



In the Chatham-Island specimen the peristome does not 

 project so much as in specimens from New Zealand, and in 

 some respects approaches the variety which I described and 

 figured from Green Point, Sydney*. 



Hab. New Zealand, Napier and Wanganni [Hamilton) ; 

 ]\Iaungauui, Chatham Island. 



Fossil : Victoria, South Australia, Gii)pslaud, New Zealand. 



Smittia lovgirostris (Jullien). (PL I. fig. 23.) 



E-vochella lonf/ircsfris, Juliieu, Mission Scient. du Cap Horn, p. 55, 

 pi. iii. iigs. 1-4, pi. ix. lig. 2 ; Calvet, Uamb. Magal. Sammelreise, 

 p. 29. 



The specimens from Maunganui, Chatham Island, are 

 slightly more strongly calcified than Jullien's specimens or 

 any others of this group which I have sc?n, and the mucro is 

 well developed, spreading out at the extremity in small 

 mammillations. Fiom this mucro the lyrula is directed 

 inwards, frequently joining with the cardella so as to form a 

 poi'e on each side. 



In the Smittia tricuspis, Hincks, a tube is sometimes 

 formed on each side of the lyrula by the junction of the 

 lyrula with the cardellae ; and this I have described in recent 

 specimens from Port Phillip (" Bry. from New Zealand,^' 

 Quart. Jonrn. Geol. Soc. vol. xliii. p. 59), and when the 

 peristome is somewhat worn then the a[)pearance is as figured 

 for my fossil Mucronella tricuspis, var. icaipulcerensis {loc. cit. 

 p. 57). 



In Mucronella munita, MaeG., from Australia, the zooecia 

 arc areolated round the margin and the surface is moderately 

 calcified, while in M. tricuspis, from Australia, the front is 

 hyaline and the pores round the margin are not seen, though 

 in both these last the peristome is raised as a neck and there 

 are pore-chambers. 



It would seem best to speak of Smittia tricuspis, var. 



* Ann. & Mag. Nat. Hist. ser. O/jvo- iv. p. 17, pi. iii. figs. 9-11. 



