'1:' 



200 



UKrOllT 1^^H4. 



in: 



ii 



Choilostomata and Cyclostomata whicli prefaces tlio two groups of fossil 

 forms. In addition to lliis wo liavo another, a preface which deals with 

 morphological details, which have been, and always will ho, of supremo 

 advantage to tho Pala;ontological student. I think tliat it may he said 

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

 writers have emerged witli difliculty. Tho work, however, of Mr. Busk 

 dealt only with sui)erticial details, and but very rarely with structure. 

 It may bo said, however, that the authors who gave to us tho elaborate 

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

 with superGcial characters ; and it was reserved ftn* later writers to deal 

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

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

 Joliet, Claparedc, Nitsche, IJarrois, and others, has given a new direction 

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

 can possibly indicate the relative positions species should occupy in a 

 natural grouping, the coll and tho cell-orifico f urni.sh 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 j^iven to tho student in 

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

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

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



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



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



Sub-Order I. Chkilostomata. 



ScRUi'OCKLLAKiA, Van Ben., p. 10. 

 1. „ scpai'OSA? Linn., pi. i. fig. G, p. 19. 



Salicoiixakia, Cuvier. 

 '' (BASSA, S. Wood (as CdJaria), pi. xxi. fig. 4-G. 



3. 



siXLOSA, Uassall (as Farcimia), 



fig. 5. 



Hiri'OTUOA, Lamx. 



4. ,, I'ATAGONiCA, Busk, pi. i. fig. ^ = Alcdo vesiculosa (?), 

 Mich. 



5. Hii'VOTHOA AissTERSA, S.W., pi. xxii. fig. G = Lepralia ibid. S.W. 



= Crisirpia pyriformis (?), Mich. 

 G. HiproTHOA DENTATA, S.W., pi. i. fig. 7 = Cateuana ibid. S.W. 



Alysidota, Busk = Fhi/ladella, Hincks. 



7. „ r.ABROSA, Busk, pi. xxii. fig. 7 = Lepralia ibid. Busk. 



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



Membranh'Ora, Blainv. 



9. ,, TUBERCULATA (?), Bose, pi. ii. fig. l = Flustm, 

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



10. Membranipora iMOnostachys, Busk, pi. ii. fig. 2 = Flustra pustu- 



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



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



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



12. Membranipora dubia, Bask, pi. iii. fig. 12. 



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



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

 ibid. Aud.). 



