Io VINE: NOTES ON POLYZOA FOUND AT CLEETHORPES. 
the ‘strongly-developed umbo below the orifice,’ it had the 
appearance of a Ce//epora ; and it was not till after I had sent 
a slide for identification to Miss E. C. Jelly that I satisfied 
myself that the small species was none other than a variety of 
the common S. Aya/lina, but I was nevertheless glad to receive 
Miss Jelly’s prompt decision respecting it. 
Genus UMBONULA Hincks (p. 316). 
Umbonula verrucosa Esper. 
B.M.P., p. 317, pl. xxxix., figs. 1-2. 
The only British species, and all that I found at Cleethorpes, 
was a small but very distinct fragment. Hincks gives 
Scarborough as another locality on the East Coast. 
Genus CELLEPORA (part) Fab. 
. Cellepora pumicosa L. 
B.M.P., p. 398, pl. liv., figs. 1-3. 
Common on stems of Zoophytes and Algz. 
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Sub-Order CYCLOSTOMATA Busk. 
I was not very successful in the gathering of species 
belonging to this sub-order. I searched in vain amongst the 
dead shells for species of Stomatopora and Diastopora. 
Perhaps others have been, or may be, more fortunate in their 
findings. 
Genus CRISIA (part) Lamouroux. 
Crisia cornuta L. 
B.M.P., p. 419, pl. lvi. 
My best examples were found on Plocamium. The normal 
form only. 
21. Crisia eburnea L. 
B.M.P., p. 420, pl. Ivi. 
Common on Algz, and the roots and stems of Zoophytes. 
- Crisia denticulata Lamk, 
.M.P., p. 422, pl. Wi, | 
Not frequent, so far as I am aware. On Algze, 
This interesting group has formed the subject of a very 
elaborate paper by Sidney F. Harmer, in which details of a 
special character, as to the mode of branching and formation 
of ovicels, are dealt with by a masterly hand, and in a most 
novel way (Quart. Jour. Microscopical Science, March 1891, 
pp. 127-181). A second paper on the embryology of the 
Species 1s In preparation, and promised at an early date. 
Naturalist, 
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