314 



A. W. WATEES ON FOSSIL CMLOSTOMATOUS 



The number of species of Chilostomata mentioned in this paper 

 is seventy-two ; and, so far as my preliminary examination goes, it 

 seems that there are about thirty determinable species of Cyclosto- 

 mata ; so that from this one small lump of clay there cannot be less 

 than two hundred determinable species when we add together 

 the Bryozoa, Foraminifera, Entomostraca, and other remains. It 

 now becomes necessary to make comparison of these Chilostomata 

 with those found in other strata ; and we find that a large propor- 

 tion are identical with those from the Orakei-Bay beds in New 

 Zealand. Stoliczka's descriptions and figures do not in all cases 

 permit of comparison ; but out of a total of twenty-nine comparable 

 species, there are from Yarra-Yarra seven Chilostomata and seven 

 Cyclostomata. With the Mount-Gambier beds the number is large ; 

 but this is the result of direct comparison, whereas I have had no 

 opportunity of seeing any fossils from Orakei Bay ; and the number 

 of species from Mount Gambier, known to me, and of which I hope 

 shortly to publish a list, is greater than the Orakei-Bay list. The 

 number of identical species from the two places is now twenty- three 

 Chilostomata ; but as I progress with the determination of the 

 Mount-Gambier collection the number will no doubt be increased. 

 We miss from this locality the Mount-Gambier species Cellaria 

 (Melicerita) angustiloba, Busk, and Spiropora verticellata (a species 

 common in the European Chalk). The C. angustiloba may be re- 

 presented by O. globulosa. 



Twenty-two of the Chilostomata are known recent ; and many 

 more are very nearly allied to living forms. 



Three species are already known in the Miocene ? Muddy-Creek 

 (Victoria) beds, and four Chilostomata and, at any rate, three 

 Cyclostomata from the Eocene of Italy ; but several others show 

 relationship to the Miocene and Eocene forms, and we are frequently 

 reminded of European Cretaceous ones, though in only one case 

 could we feel justified in identifying the species with any from the 

 Chalk. 



It will, however, be well to defer further comparison until the 

 list of the known Mount-Gambier species, upon which I am now 

 engaged, is completed. 



I have already * referred in various places to my reasons for using 

 the term Bryozoa, which is now universally employed by German, 

 Erench, and Italian authors ; and I do not therefore need to enter again 

 into the question. And although I am sorry that those few English 

 authors who have been before the public for a long time have not 

 been induced to change the name which they have used for several 

 years, yet I have indications which cause me to feel quite confident 

 that the next generation of English workers will use the class name 

 which has been employed in the rich literature of Germany and 

 France ; and I am glad to see that Mr. Tenison Woods f has begun 



* "On the Terms Bryozoa and Polyzoa," Ann. & Mag. Nat. Hist. Jan. and 

 Feb. 1880 ; " Reply on the Term Bryozoa," ibid. Aug. 1880. 



t " Corals and Bryozoa of the Neozoic period in New Zealand," Palaeontology 

 of New Zeal. pt. iv., Colon. Mus. & Geol. Surv. Depart. 1880. 



