36 
its way out of the case of the Chrysalis, broke away the three or 
four last segments of the small end, leaving a ragged edge to the 
opening, but not a regular marginated operculum as given in 
Reaumur’s figure, and which operculum is so remarkable in the 
Chrysalis of the Oestrus Bo vis. 
This Insect proved a male, fig. 26 ; and I afterwards in the 
cabinet of Linnaeus, obligingly presented to my observation by 
Sir James Edward Smith, found the female, fig. 27> with a short 
stylus to the abdomen. Some other specimens of this species 
were found in this cabinet, taken from the collection of Hudson, 
the ingenious author of the Flora Anglica, nearly spoiled, and 
entangled in the melted wax with which his drawers were covered, 
as was the custom of those days before the use of cork. A misera¬ 
ble fire consumed his house, and nearly his Herbarium, and occa¬ 
sioned the melting of the wax before mentioned. 
Linnaeus supposed this Insect entered by the nostrils and lived 
there as the other did by the fundament ; but as no insect would 
destroy its own wings, and so miserably punish itself, we have 
ventured to obliterate the name, that erroneous notions should 
not be suggested by it.—For its description see the conclusion 
of this dissertation. 
It appears to me that more certain information might be ob¬ 
tained respecting this and the other species that infest the domestic 
animals, by a very simple method, and which I propose next year 
to endeavour to prosecute, if my health and present views re¬ 
main. For this end I propose to procure from the slaughter¬ 
houses, and the stomachs of dead horses there, such of these ob¬ 
scure species in the Larva state as it may be desirable to investi¬ 
gate ; and since they cannot be fed with any prospect of success 
out of the body, I intend to inclose them in a ball of meal, and 
administer them to my own horse, as balls of physic are admini¬ 
stered, and in his stomach they will perfect their growth. I next 
intend to have a stall boarded at bottom and closely jointed, with 
