330 Scientific Proceedings, Royal Dublin Society. 
delicate form as P. nutans. The differences amongst the nume- 
rous described species of this genus are often very slight; and it 
seems not at all improbable that these two may ultimately be 
united, if it can be shown that the nature of the polypary is 
variable as to the formation or otherwise of an enlargement for 
protection to the polypite. It may possibly be that the polypary 
changes with age, and that the enlargement and firmness not 
distinguishable in Hincks’s examples may appear later. Only by 
a study of numerous examples in the living state can this be deter- 
mined; but until the point is settled, it seems best that P. nutans 
and P. inflatus should remain separated, if only to stimulate further 
inquiry. 
This new species we owe to the labours of the Royal Irish 
Academy Survey of the South-west Coast of Ireland, but it seems 
best to insert it on the present occasion. 
Habitat.—Growing on Sertularia abietina, and other zoophytes 
from deep water off the south-west coast of Ireland. Obtained 
on material trawled from two distinct localities:—Log 72, 
11 miles south of Glandore Harbour, from a depth of 54 fathoms ; 
Log 37, 13 miles south-west of Galley Head, from a depth of 
43 fathoms.—(R. I. A.). 
Bimeria vestita, T. S. Wright. 
A single specimen of this peculiar form was collected from 
St. 240, Lough Swilly; depth 6 to 83 fathoms. It does not 
appear to be at all common around the Irish coasts, as this is the 
first time it has been recorded for the country. It is known 
from several British localities. 
Bougainvillia fruticosa, Allman. 
Tn correspondence with Mr. Hincks, I submitted to him a form 
of Bougainvillia loaded with gonophores, which appeared to agree 
with his description of an intermediate form, mentioned on p. 112 
«Brit. Hyd. Zooph.,” and figured on pl. xix., fig. 3. He agreed 
with me in my determination of this form. However, com- 
paring it carefully with the description and figures of Allman’s 
B. fruticosa, I fail to find any character of importance in which 
my specimens differ from that species. The stem is sub-alternately 
branched; the polypites are incapable of retracting themselves 
