PROCEEDINGS OF SOCIETIES. 
Dublin Microscopical Club. 
15 th April, 1869. 
Dr. John Barker showed a good example of the new Rhizopod 
which Mr. Archer had lately named Heterophrys FocJcii, believing 
it to be the same as that brought forward by Dr. Focke, of Bremen, 
in ‘ Siebold and Kolliker’s Journal.’ The present example well 
showed the marginal pulsating vacuoles of the interior sharply- 
defined region of the body, a point not dwelt upon by Focke 
(always supposing this to represent one and the same form), though 
he had suspected but had not satisfied himself of the existence 
of a contractile vacuole, not marginal, but immersed in the body- 
substance. 
Rev. T. Gr. Stokes exhibited specimens of Amphitetras ornata from 
the Seychelles with five points, and of the same species from Guano 
with four points, thus proving that this is a character of but trivial 
importance. 
Mr. Crowe exhibited an interesting example of the formation of 
terminal buds on the leaves of an unascertained species of Hypnum, 
looking, at a hasty glance, almost like some form of Coleochsete 
living epiphytically thereon. A closer examination, however, 
showed that those prothalloid structures were really prolongations 
of the moss-leaves, and merely examples of the very curious simple 
vegetative mode of repetition which takes place in these plants. 
Rev. Eugene O’Meara showed Surirella elegans from Lough 
Morne. 
Dr. Macalister exhibited examples of a new louse obtained from 
the Collared Peccary, Dicotyles torquatus. This belonged to the 
genus Gyropus, and, for comparison’s sake, its relative from the Pig 
(//. Suis) was likewise shown. The following characters distinguish 
the new form called Gyropus Dicotylis : — Ferruginous brown in 
colour; head obtuse, with prominent lateral angles directed for- 
wards, broader than long ; last joint of antennae bilobed, neck l of 
breadth of head ; prothorax hexagonal, flattened, separated from 
mesothorax by a deep fissure, meso- and metatliorax not readily dis- 
tinguished, but separated from abdomen by a slight sulcus ; abdo- 
men serrated on margin ; hinder pair of limbs long, with curved 
femur and transversely striated claw ; tibia with a projection about 
its centre. 
Mr. Archer, whilst exhibiting a specimen of the dichotomonsly 
