384 MODERN CLASSIFICATION OF INSECTS. 
the name of lackey caterpillars. Clisiocampa Neustria has the in- 
stinct to arrange its eggs in a close spiral coil round the young 
branches of fruit trees. 
Many of these moths are remarkable for the instinct which the 
males possess of seeking their females from very great distances, and 
in situations apparently inaccessible to them, in great numbers. This 
habit, which collectors call ‘“sembling,” is turned to good account 
when they happen to rear the females of rare species, as they are 
sure to secure numbers of males if the females be taken to the woods. 
Mr. Haworth has given an account of this habit (Lepid. Britann. 
p- 82.), and mentions an instance in which a male moth found its way 
into the pocket of a collector, who happened to have a female in his 
collecting-box. The means by which these males are apprised of the 
presence of their partners at such distances is at present only con- 
jectural. Other instances are recorded, where male moths have come 
down chimneys. (Davis, in Loudon’s Mag. Nat. Hist. No. 4. Jurine 
has also described some singular instances of this kind in his Vouwv. 
Méthode de classer les Hymenopt. Pref. p. 9.) 
A circumstance also, of great physiological interest, has been ob- 
served with several species of these insects, namely, the production 
of fertile eggs without impregnation. Burmeister has collected a 
number of such instances (Handbuch, Translation, p. 312.) ; and M. 
Carlier communicated to Lacordaire (Introd. a4 0 Entomol. tom. ii. 
p- 383.), that he had obtained, without impregnation, three genera- 
tions of Hypogymna dispar *, the last of which consisted entirely of 
males, which, of course, put an end to the experiment. 
The transformations of many of the species of this family are illus- 
trated in the works of Réaumur, De Geer, Rosel, Schaffer, Sepp, 
Hubner, Admiral, and other works expressly devoted to the metamor- 
phosis of this order. 
The seventh family, Arcrip#, with which I have united the 
Notodontidz of Stephens, nearly corresponds with the third sec- 
tion of the Nocturna of Latreille, or the Pseudo-Bombyces, and 
comprises those species which have the wings deflexed in repose, 
* Mr. Davis also informed me of a similar occurrence, observed by Mr, Tardy, 
in one of the eggar moths, 
