ZOOPHYTOLOGY. 263 
ascending spine at each lower angle of the aperture. Avicularia of a blunt, 
rounded, elliptical form, scattered over the polyzoary among the cells. 
Hab. Madeira, Johnson. 
A very peculiar and well-marked species, characterised not 
only by the skeleton-like appearance of the cells, some re- 
semblance to which may be occasionally observed in L. nitida, 
but more especially by the large blunt avicularia scattered 
wregularly among the cells, as in L. monoceros, Busk, and 
L. margaritifera, Quoy and Gaim (‘ B. M. Cat.,’ pl. ci), in 
which latter the avicularia, though far smaller, are of pretty 
nearly the same shape as those of L. sceletos. 
2. L. radiata, Moll. Pl. XX, figs. 4,5. (‘ Quart. Journ. Micros. 
Sc.,’ vol. vi, p. 128.) 
3. Fam. CELLEPORID2. 
4. Gen. Cellepora, Fab. 
l. C. Hassallii (var. a). Pl. XX, fig. 6. 
The only difference apparent between the present form, 
and that taken as the typical species in the ‘B. M. Cat.,’ 
p. 86, pl. cix, figs. 4, 5, 6, is the absence in it of the punctures 
in the ovicell. Whether this is alone sufficient to constitute 
a specific distmection, may be considered doubtful. For the 
present, I am inclined to regard the Madeiran form simply as 
a variety of the British. 
