410 CELLEPORID.E. 



summit" ('Crag Polyzoa/ p. 61). Nor could the cells of 

 C. avicularis be correctly described as "distant, con- 

 nected by ridges." I must leave the species to be illus- 

 trated by the study of recent examples. 



CELLEPORA ARMATA, Hincks. 

 Plate LIV. figs. 10-13. 



CKLLEPOKA ARMATA, Hincks, Quart. Journ. Micr. Sc. (11. s.) viii. 278, pi. Hi. 

 fig. 5; Proc. Dubl. Uiiiv. Zool. & But. Assoc. ii. pt 1, 77. 

 pi. iii. fig. 5. 



Zoarium adnate, forming a rather thin crust. Zocecia large, 

 distinct, ovate, ventricose, smooth, suberect, except near 

 the margin ; orifice orbicular, more or less produced 

 and pointed below ; peristome thin and raised ; a stout 

 subcylindrical rostrum below it, placed a little on one 

 side, bearing an avicularium immediately under the apex, 

 with a subtriangular mandible ; large, raised, spatulate 

 avicularia distributed in great numbers amongst the 

 cells, the mandible generally directed inwards. Ocecia 

 smooth, walls entire. 



HABITAT. On shell, &c., probably from deep water. 



LOCALITIES. Coast of Antrim (Hyndman) : Hastings 

 (Miss Jelly) : Dogger bank, on mussel; Cornwall (T. H.). 



GEOGRAPHICAL DISTRIBUTION. Algiers, on Lepralia 

 fuliacea (J. Y. J.). 



This is a large-celled species, and in general appearance 

 differs much from C. avicularis. Its structure is simple ; 

 it has neither the irregular and confused appearance of 

 the latter nor the spinous character of C. pumicosa. The 

 cells are distinct, not crowded together, and very ventri- 

 cose. The prajoral rostrum is short, subcylindrical, and 

 blunt above, and immediately below the apex is placed 



