32 Mr. G. Busk on Polyzoa collected on the Coast not unreasonably anticipate, after the wonders that geology has already made known to us. Animals the most isolated in ex-isting nature have been shown to be but the last of a series of allied species which have lived and died upon the earth. Every class and every order has furnished some examples, from which we may conclude, that all isolations in nature are apparent only, and that whether we discover their remains or no, every animal now existing has had its representatives in past geological epochs. IV. — Polyzoa collected hy Mr. M 'Andrew on the Coast of Norway and Finmark in 1856. By George Busk, F.R.S. & L.S.* [With a Plate.] MOLLUSCA. Class POLYZOA. Order I. P. Infundibulata. Suborder I. Cheilostomata. 1. Fam. CABEREADiE, Busk (B. M. Cat. p. 37). 1, Caherea, Lamx. (B. M. Cat. p. 37). 1. C. Hookeri, Fleming (B. M. Cat. p. 39. pi. 38. fig. 2). 2. Fam. CELLEPORADiE, Busk {B. M. Cat. p. 85). 1. Cellepora, O. Fabricius (B. M. Cat. p. 85). 1. C.cervicornis, auctor. (pars); Couch, Cornish Fauna, p. Ill, pi. 19. (PI. I. fig. 1.) Much confusion exists with respect to this species, which I have no doubt more properly belongs to Eschar a. The form here intended, however, which is plainly identical with Mr. Couch's, and therefore most probably with Borlase's, is quite distinct from the Eschara cej'vicornis of the B. M. Cat., and 1 believe also from that of M. -Ed wards (Sur les Eschares, p. 15. pi. 1. fig. 1), though perhaps not from the form represented in his pi. 2. fig. 1. The genus Eschara requires careful revision, as does also Cellepora. * The list is arranged according to the artificial classification adopted in my Catalogue of Marine Polyzoa published by the British Museum, in which, so far as that Catalogue at present extends, the synonymy will be found.
BioStor
