556 Miscellaneous. 
of others, fighting against ignorance and superstition, may it be 
said— 
«Some cherissaunce it is to gentle mind, 
When they have chevyced their land from bane, 
When they are dead, they leave their name behind, 
And their good deeds do on the Earth remain.” 
(Introduction to ‘ Elia’ : Chatterton.) 
MISCELLANEOUS. 
On a new Mywxosporidian of the Family Glugeide. 
By Louis Lier. 
Tun larvae of Simulium (S. ornatum, Meig.) abound at the com- 
mencement of spring in our swift-flowing French streams, and more 
particularly in those of the mountainous districts of the south. 
‘They are to be found in hundreds, placed side by side and attached 
by the anal region to stones or blades of grass, more especially in 
the places where the current is most disturbed. 
Tt these clusters of larvae be examined with some little attention, 
one is struck with the very peculiar appearance presented by certain 
of them, in which the abdominal region is greatly swollen and of a 
milky-white colour, which offers a sharp contrast to the dusky green 
tint of the normal individuals. A careful dissection, performed 
under a lens, shows that these larve contain in the body-cavity 
free parasitic masses each of which forms a kind of sac of an opaque 
white, with irregular contours. Certain larve contain but one of 
these masses, which fills the greater portion of the body-cavity, and 
thus attains a length of almost half a centimetre; others exhibit 
two or three of them—rarely more—which together fill up the 
vacant spaces of the body-cavity, upon which to some extent they are 
moulded. Sometimes, in the caseof certain greatly diseased larve, 
the parasitic sac, owing to excessive growth, has distended the super- 
fielal integuments and causes a hernia on the surface of the larval 
abdomen in the shape of a large and nearly spherical cyst; but 
most frequently the parasite in its growth simply compresses the 
organs of the body-cavity without injuring them in any way. Even 
the muscles are not injured, and the larve, though severely attacked, 
still exhibit very active movements. The fat-body alone appears 
excessively reduced and is often wanting, which leads to the belief 
that it is above all at its expense that the development of the para- 
site is effected. As for the digestive tract, this appears to be always 
immune in larvze manifestly attacked by the parasites. On a single 
occasion I met with a young Myxosporidian still non-sporulated 
and forming a hernia on the external surface of the intestine, which 
shows that the migration of the vegetative stages from the alimen- 
tary canal into the coelome takes place at a very early period and 
rapidly. 
On being examined under the microscope the parasitic masses 
appear as sacs with a delicate transparent wall, the interior of 
