120 THE CRAG POLYZOA. 



It is with great hesitation that I place this form in the genus Fangella at all, inasmuch 

 as I think it very probable that it represents merely the young or incipient condition of 

 Fascicularia tubipora. I should have had no doubt about this had that w^ell-marked and 

 gigantic species occurred among those described by M. Michelin, whose figure and 

 description of Frondipora Marsillii (strangely confounded by him with the wholly 

 dissimilar F. Marsiglii of Blainville), shows beyond dispute that that species is identical 

 with ours. But since Fascicularia tubipora is not noticed by Michelin, and could hardly, 

 had it existed in the beds examined by him, have been overlooked, this circumstance leads 

 to the suspicion that his F. Marsillii could not be the young state of that species. 



3. FUNGELLA INFUNDIBULATA. PI. XVII, fig. 6. 



Polyzoario infundibuliformi, vel cyathiformi. Cellularum orificiis ad marginem capituli 

 incrassatum et rotundatum positis. Stipis superficie alte sulcata. 



Polyzoarium infundibuliform or cupped ; cells opening all round the thickened, rounded 

 margin of the cup ; peduncle strongly sulcate. 



Habitat. — C. Crag, Sutton ; S. JFood. 



The peduncle in this species of Fungella is deeply and irregularly grooved, owing, 

 manifestly, to the destruction of the wall of the cells constituting its exterior. The interior 

 of these open tubes exhibits a closely punctate surface, like that of the interior of the 

 tubes in F. quadriceps and F. multijida, though the puncturation seems to be closer in 

 F. infundibulata than in the others. 



Genus 12. Heteropora, Blainville. 



Polyzoario erecto, cylindraceo, simplici vel ramoso. Superficie aperturis duplicis 

 generis, orificiis nempe et osiioUs ornata. 



Polyzoarium erect, cylindrical, undivided, or branched ; surface even, furnished with 

 openings of two kinds ; the larger representing the orifices of the cells, and the smaller 

 the ostioles of the interstitial canals or tubes. 



Heteropoka, Blainville, Man. d'Actin., p. 417, 1834; Lamarck; Lonsdale; Hagenow, 1831 ; 



Reuss ; Michelin ; J. Morris. 

 Ceriopora (pars), Gold/uss ; Hagenow, 1846; VOrhigny. 

 MiLLEPORA (pars), Lamouroux. 

 Entalophora (pars), Ceiuocava, MuLTicKESCia, Semicrescis D'OrLigny. 



