NEUROPTERA. — MYRMELEONID. = 45 
diverses sur les Ins., tom. ii.), have given numerous details, and i nter- 
esting accounts of the habits and structure of this larva. 
Bonnet discovered, in the environs of Geneva, specimens of a larva 
which differed from the common one, in not crawling backwards, but 
forwards, with the head raised, and in not forming a pitfall; the body 
is considerably longer, and more pointed, and the hind legs affixed so 
as not to be so completely concealed beneath the body. (Bonnet, op. 
cit. p. 282.; and Reaumur, tom. vi. p. 377.) Latreille thinks it probable 
that this larva belonged to a species of Ascalaphus, rather than to 
Myrmeleon; but, from the account given by Mr. Guilding of the 
preparatory states of the former of those genera, this is evidently 
not the case. It appears rather to be the larva of M. Libelluloides, 
or an allied species, agreeing in some respects with the larva of 
that insect described by Ionicus in the Entomol. Magazine, vol. iii. 
p- 461., and which he states generally feeds upon heteromerous beetles, 
lurking underground in the sand, without making a pit. 
M. Percheron has figured a larva with details, which he gives as that 
of M. Libelluloides, but it does not accord with the description of Ioni- 
cus. Guilding’s account of the economy of a species allied to M. 
Libelluloides (the type of Leach’s subgenus Formicaleo), does not 
materially differ from that of M. formicarium. 
The genus Ascalaphus abr. is remarkable for the peculiar struc- 
ture of its antenne, which are very long and knobbed, like those of a 
butterfly ( fig. 63. 21.), whence Scopoli and others described one of these 
insects as a Papilio. Mr. Guilding states that his species A. MacLeay- 
anus sits quietly during the day upon dry twigs, and with its abdomen 
at an angle so as to resemble a twig, and thus deceive its enemies. 
The eggs, from sixty-four to seventy-five in numbey, are deposited at 
the extremity of the twigs in a double row, and defended from their 
enemies by ‘‘circulis multis repagulorum.” These repagula are con- 
sidered to be without analogies in the animal creation; they are 
they are expelled 
” 
“ elongata, pedunculata, subdiaphana, rufescentia ; 
from the ovary by the female with as much care as though they were 
real eggs, and are so placed that nothing can approach the brood; nor 
can the young ramble abroad till they have acquired strength to resist 
the ants and ether insect enemies. ‘The abdomen of the larva is de- 
pressed and oval, with ten pectinations on each side ; all the legs are 
gressorial —“ Larva segnis, corpus pectinesque arenulis tegens, man 
dibulisque sub lateribus reconditis praedam expectans.” (Zinn. Trans., 
