82 THE CRAG POLYZOA. 



same Atlantic region, being, with one exception (C. Owenii), confined to the Madeira) 

 group of islands ; whilst three seem to be peculiar to the Philippines. 



Of the four austral species, one only belongs to the genus Ciipularia (C. guineensis), 

 which approaches in type very nearly to the Atlantic C. canariensis, whilst the other three, 

 belonging to the genus Lunulites, would appear to be peculiar to the Australian seas. 1 

 With respect to the latter, it is furthermore interesting to remark, that they alone, among 

 recent Selenariidae, represent the more ancient fossil forms ; as, for instance, those found 

 in rocks of the Cretaceous period. 



The known number of fossil species which it seems at all possible to identify from the, 

 with few exceptions, very imperfect figures and descriptions of writers, amounts to 

 between thirty and forty ; although this number may be regarded as liable to considerable 

 deductions or additions, there being little doubt that many species have been confounded 

 together or separated from each other upon insufficient grounds. These fossil forms may 

 be arranged as under. 



(1) Crag. 



1. C. OWENII (?), Gray. 1 



2. L. ALVEOLATUS, S. W.\ = C " DENTICULATA, Conrad. 



3. C. CANARIENSIS, B. 



4. LUNULITES CONICA. 



5. L. POROSA (n. sp.) 



(2) Miocene, or more recent than Eocene. 



C. C. DENTTCULATA, Conrad. (Crag.} 



7. C. INTERMEDIA, Michellotti. 



8. C. UMBELLATA, Defiance. 



9. C. VANDEBECKEI, Mickelin. 



10. L. ANDROSACES, Michellotti. 



11. L. CONICA, Defrance. (Crag.) 



12. L. CUVIERI, Defrance. 



13. L. PDNCTATA, Leymerie. 



(3) Eocene. 



14. L. SEXANGULA, Lonsd. 



15. L. DISTANS, Lonsd. 



16. L. CONTIGUA, Lonsd. 



17. L. RADIATA, Lamarck. 



18. L. URCEOLATA, Lamarck (not Goldfuss, Lamouroux). 



19. C. RHOMBOIDAUS, Mijmster. 



20. C. HAIDINGERI, Reuss. 



1 Whilst these pages are passing through the press, I have been favoured by my friend, Mr. R. K. 

 Parker, with some fossil Polyzoa from a miocene deposit in St. Domingo, amongst which occur Cupu/aria 

 ranariensis, and a form which seems to be identical with Lunulites (Ciipularia) umbelluta, Defrance, figured 

 in Blainville's 'Man. d. Actinologie,' pi. Ixxii, fig. 1. 



