154 ZOOPHYTOLOGY. 



inch or two iu height, the branches being from a quarter to 

 three quarters of an inch or more in length, each articulated, 

 as it were, to that from which it rises by a slender point of at- 

 tachment. They are composed of a thin and narrow lamina, 

 which is twisted spirally with the utmost regularity round an 

 imaginary axis, and the outer or marginal cells each support a 

 strong sessile avicularium, besides which are other avicularia 

 scattered irregularly among the cells on the upper surface of the 

 lamina. 



The cells themselves (in S. florea) are irregularly oval in out- 

 line, and usually much attenuated below, and on the right- 

 hand margin of each, close to the top, is a blunt, hollow, mar- 

 ginal spine, filled apparently with a granular material. No 

 indication of ovicells is observable in the only specimen we 

 have seen. 



Fam. 3. Celleporid^, B. 

 Geu. 3. Cellepora. 0. Pab. 



1. C. edax, B. PI. XXXIV, figs. 3 and 3». 



Folyzoario massivo, crasso, mamillato, conchce parnce turbinatm foniiam 

 gerente ; cellulis ovatis, rJtomboidaUbus ereclis seu subdecumbeiitibus, timbo' 

 natis, siiperficie scabrd, imncturatd. Ostio supra-arcuato, medium versus 

 constricto, utrinqtce deiiticulato, labio inferiori recto. 



Polyzoarium forming a dense, thick, botryoidal mass, having the form of a 

 small turbinate shell ; cells ovate, rhomboidal, erect, or siibdecumbent, 

 umbonate ; surface punctured, rough ; mouth rounded above, contracted 

 below, the middle, with a small denticle on each side ; lower lip straight. 



Hub. — Coast of Devon, on a small turrited sliell. (Fossil) Coralline 

 Crag, on a species of Natica and Turritella. 



This curious and interesting Cellepore, which constitutes 

 one of the links between the British Fauna of the period to 

 which the Coralline Crag of Suffolk and Norfolk belongs and 

 that of the present time, is described and figured in our 

 ' Monograph of the Crag Polyzoa ' from fossil specimens. 

 We now give a figure taken from a recent Devonshire speci- 

 men, for the opportunity of inspecting Avhich Ave are indebted 

 to the kindness of the Rev. Mr. Hincks. The following ob- 

 servations occur in the work cited : — " This is a very peculiar 

 and interesting form. The rather dense crust, which has a 

 botryoidal aspect, appears to have been in all cases formed by 

 superimposed layers of cells, covering, most usually, small, 

 turbinate Natica-like shells, in most instances of the same 

 species, but in other cases it invests a small TunnteJla. These 

 specimens consequently are all much alike, resembling small, 

 thick, univalve shells, Avitli a comparatively small, circular 

 mouth. But it is curious that it is extremely rare to find in 

 these masses any remains of the original shell. In by far the 



