200 report— 1884. 



Cheilostomata and Cyclostomata which prefaces the two groups of fossil 

 forms. In addition to tbis we have another, a preface which deals with 

 morphological details, which have been, and always will be, of supreme 

 advantage to the Pakeontological student. I think that it may be said 

 that the publication of this work inaugurated an epoch out of which later 

 writers have emerged with difficulty. The work, however, of Mr. Busk 

 dealt only with superficial details, and but very rarely with structure. 

 It may be said, however, that tbe authors who gave to us the elaborate 

 monographs which this report fully indicates by the lists given, dealt only 

 with superficial characters ; and it was reserved for later writers to deal 

 with and interpret the meaning of tissue and structure of the fossil by the 

 study of living species. Hence the publication of the works of Mons. 

 Joliet, Claparede, Nitsche, Barrois, and others, has given a new direction 

 of thought in the study of fossil forms ; and, so far as superficial character 

 can possibly indicate tbe relative positions species should occupy in a 

 natural grouping, the cell and the cell-orifice famish us with details only 

 dimly visible to authors who wrote previous to Professor Smitt, Mr. 

 A. W. Waters and also Rev. T. Hincks. I have given to the student in 

 the first part of this Report ample material by which Busk and others can 

 be brought into harmony with the more modem classification. It is be- 

 cause of this that I had no desire to alter the text. 



1 A Monograph of the Fossil Polyzoa of the Crag.' By George Busk, 



F.R.S., &c, 1859. 



Sub-Order I. Cheilostomata. 



Scrupocellaria, Van Ben., p. 19. 



1. „ SCRfPOSA ? Linn., pi. i. fig. 6, p. 19. 

 Salicorxaria, Cuvier. 



2. ,, crassa, S. Wood (as Cellaria), pi. xxi. fig. 4-G. 



3. ,, siNCOSA, Hassall (as Farcimia), „ fig. 5. 



Hippothoa, Lamx. 



4. ,, patagonica, Busk, pi. i. fig. 5 = Alecto vesiculosa (?), 

 Mich. 



5. Hippothoa abstersa, S.W., pi. xxii. fig. 6 = Lepralia ibid. S.W. 



= Griserpia pyriformis (?), Mich. 



6. HiproTHOA dentata, S.W., pi. i. fig. 7 = Catenaria ibid. S.W. 



Altsidota, Busk = Fhylactella, Hincks. 

 . 7. ,, labrosa, Busk, pi. xxii. fig. 7 = Lepralia ibid. Busk. 



8. „ catena, S.W., pi. vii. fig. 7 = Lepralia ibid. S.W. 



Membranipora, Blainv. 



9. ,, tuberculata (?), Bose, pi. ii. fig. 1 = Flustra, 

 ibid. Bose = F. membranacea, Esper = F. crassidentata, Lamk. 



10. Membranipora monostachys, Busk, pi. ii. fig. 2 = Flustra pustic- 



losa (?), D'Orb. = Memb. nobilis (?), Reuss. 



11. Membranipora Savartii, Aud., pi. ii. fig. G = Flustra ibid., Sav. 



= M. Licjeriensis (?), D'Orb. 



12. Membranipora dubia, Busk, pi. hi. Sg. 12. 



13. „ trifolium, S. Wood, pi. iii. figs. 1, 2, 3, 9. 



14. ,, Pouilletii, Aud., pi. iii. figs. 4, 5, 6 (as Flustra 

 ibid. Aud.). 



