88 Dr Fleming on the Natural History 
tions of young specimens of the same species. These figures 
were certainly never drawn from specimens of S. geniculata^ 
partially figured at Tab. xii.. No. 19. b B, to which Ellis 
himself was disposed to refer them, and in which opinion he has 
been followed by Pallas ; nor from S. dichotoma, with which 
Solander (Zooph. p. 49.) assimilates them ; for the two species, 
although belonging to the same natural genus, are specifically 
distinct. From having examined this Sertularia in various 
stages of growth, and having seen it assume exactly the appear- 
ances which Ellis delineates, (with the exception of not having 
noticed the young polypes in the act of issuing from the vesicles,) 
I am convinced of the propriety of adding to the S. gelati- 
nosa of Pallas, the references to the figures of Ellis which 
have been quoted. 
This species forais a part of the new genus Laomedea of 
Lamouroux, in the work already quoted, with a note subjoined, 
‘‘ an hujus generis To this question it is not very difficult to 
return a satisfactory answer. If either the Laomedea antipa- 
thes^ which he first describes and figures, or the L. (Sertularia) 
spinosa^ Ellis’s Cor. Tab. xi. No. 17., which he quotes, be con- 
sidered as the type of the genus, then the Sertularia gelatinosa 
does not belong to it. But it is related to this genus, if these 
species and others analagous be ejected, and L. (Sertularia) 
dlchotoma and geniculata be retained; for with these it has 
many points of resemblance, agreeing in the pedunculated den- 
ticles, and axillary vesicles. The Sertularia muricata, which 
he has likewise appended in the same genus, presents cha- 
racters very distinct from all those with which it is associated. 
I possess a new species nearly related to the latter, from Loch 
of Belfast, given to me by Mr Templeton of Orange Grove, 
a gentleman Avell known as an accomplished botanist, and to 
whom the British Fauna is indebted for the Ephydatia {Spour- 
gia, Lin.) canalium, examples of which I have likewise obtain- 
ed, which he found adhering to the wall of the lock of the canal 
above Lisburn, 22d September 1810. 
While some Sertularije, having stems consisting only of a 
single tube, are able to support themselves such as S. abietina ; 
others, equally simple in structure, require the support of other 
bodies, as the S. volubilis ; while in a third tribe, several tubular 
