408 Mr. Bracy Crank on the Insect 
feet, as though by enchantment. Then for a while they would - 
be quiet; then, again, they were seen most furious, and this 
with so general and regular a movement, that no army would 
have surpassed their exercises in uniformity." Id 
Linnæus further states, in the Lachesis Lapponica, respecting 
the effects produced by this sort of Œstrus, that in passing after- 
wards into the Lapland alps he observed a Rein-deer, which was 
loaded with his own package, frequently to stop short and 
become perfectly quiet and motionless as a pillar of stone, or 
one suddenly struck with catalepsy ; the head held straight out, 
the ears upright, the eyes fixed; nor could he by any ill treat- 
ment be induced to proceed; but in a little while he would 
again resume his march. : Where, I would ask, is the Tabanus, 
or Conops, that could produce effects like these? or what natu- 
ralist, at all acquainted with the operations of Nature herself, 
could confound the dissimilar effects produced by these several 
insects ? | 
Linnæus further says, that in the Rein-deer fly he saw the 
egg held out “like a white mustard-seed” at the end of the 
abdomen, which, if true, fully confirms the supposition that 
there can be no infliction. 
The Œstrus hemorrhoidalis and Œstrus Ovis, in performing 
their office of ovi-deposit, are also equally irritating and pecu- 
liar, as I have shown in the paper above alluded to, in the 3rd 
volume of the Society's Transactions. | 
I avail myself of this opportunity in conclusion, to state, in 
addition to my former remarks on this genus, that it appears to 
me, as there is no aculeus or weapon of infliction at the end of 
the abdomen of the female of the CEstrus Bovis, that the egg is 
simply thrust down among the hair, till it meets the skin, and 
that then it is affixed to it by a glutinous liquor secreted at the 
same — 
