13 
copied the remarks of Reaumur in respect to their history. He 
has called the great Horse-bot Oestrus Intestinalis, a name we 
cannot acquiesce in, as this species truly lives in the stomach, 
and merely passes through the intestines in its way to the ground 
to become a Chrysalis. 
The next writer on this subject was Linngeus himself, whose 
acuteness, taste, and indefatigable research, the admirers of natu¬ 
ral history will long have cause gratefully to remember. He fur¬ 
nished us with some interesting details respecting the Rhein-deer 
Bot, acquired during his tour in Lapland, and he marshalled, 
for the first time, the members of this singular family, under the 
generic title Oestrus, separating them from the other families of 
flies, hostile to the repose of animals. He enumerated five spe¬ 
cies, all European, as follows :—Oes. Bovis, intending to give the 
Ox-bot, but described by mistake the large Horse-bot, with 
Spotted wings for it. The Oe. Tarandi, or Rhein-deer Bot. The 
Hemorrhoidatis, or Red-tailed Horse-bot . The Nasahs , for so he 
termed the next species, from supposing that it entered and lived 
in the larva state in the fauces or nostrils of the Horse, which, 
as it now appears to be erroneous, we have ventured to set aside 
the name, and to call it the Veterinus, as the former name if pre¬ 
served would ever convey a false notion of its habits. The name 
Veterinus signifying of or belonging to beasts of burden, and not 
implying any precise place in respect to its habitation, we think 
better suited to it, at least it may continue till its history is com¬ 
pletely made, out. Wanton change in names cannot be too much 
reprobated ; but when a strong necessity, from actual research 
and discovery, makes it necessary, it becomes a duty ; as specific 
names are intended as aids, but not immoveable fetters, to natural 
history. 
His fifth species was the Oestrus Ovis, or Sheep-bot. The num¬ 
ber has since been more than doubled by succeeding wiiteis, 
D 
