24 
Mr. Henry Le Keux on the Turnip Fly. 
lobo intermedio obscure fuscis ; thoracis angulis posticis al- 
bidis, nervis hemelytrorum obscurioribus. 
Long. corp. lin. 3. 
Individuum vidi unicum in Gumma Anime inclusum. In Mus. 
Dom. Strong. 
Species 4. Enicocephalus Tasmanicus. 
Piceus, pilosus, antennis concoloribus ; pedibus fuscis, geniculis 
omnibus, margineque interno femorum anticorum fulvescen- 
tibus ; hemelytris et alis pallid^ fuscis, nervis obscurioribus ; 
margine externo hemelytrorum ad basin albido. 
Long. corp. (alis clausis) lin. 3f . 
Habitat in Terra Van Diemenii. 
In Mus. nostr. Communicavit Dom. Ewing, M. E. S. 
V. Remarks on the Turnip Fly (Haltica nemorum). By 
Henry Le Keux, Esq. 
(Tab. IV.) 
Having thrown my notes together relating to the Turnip Fly, with 
such additional information upon the subject generally as I have been 
enabled to acquire, I have now the pleasure to lay them before the 
Society. I have made drawings (which I send with this) of the 
eggs, of the larva, and of its mode of burrowing in the turnip leaf, 
and also of the perfect insect, which, together with the accompany- 
ing figure of the pupa, by Mr. J. O. Westwood, will make the 
series of figures of the different states of the insect complete. I 
also send a small portion of a turnip leaf, with three eggs of the 
Haltica upon it, preserved in spirits. 
Having witnessed the destructive effects of the Turnip Fly in the 
year 1830, whilst lodging at a farm-house in Devonshire, I was led 
to observe its habits, and to try many experiments, in the hope of 
being able to find some means of guarding against its attacks. 
My first observations were made upon a field of about eight acres, 
forming the apex of a hill, which was sown with turnips. When 
the young plants were just rising above the ground, the wind was 
in the south-east, and continued to blow from that point for more 
than a week, carrying in its course the scent of the turnips over 
