112 Analytical Notices of Books. 
“* very fine. Legs alike, four anterior approximating, first pair attached 
“ to the antepectus, second pair to the medipectus ; third pair very re- 
** mote, attached to the extremity of the postpectus. Coxe, four an- 
“ terior very large. Tibie not spined. Tarsi composed of four joints 
“* surrounded by a pubescent membrane, basal joint the largest, terminal 
“* the smallest, and notched at the apex. Claws none. Larve inha- 
“© biting the abdomens of living Andrene, the heads being exserted be- 
«* tween the segments. Pupe inhabiting the same situations.”’ 
In the accompanying Plate are given various views of this singular in- 
sect, and also figures of the larva, both detached from the bee in which 
it dwells, and as it appears from between the segments of the abdomen 
of the Andrena. The pupa is also figured, which differs in several 
remarkable particulars from the darva, and had entirely escaped the 
notice of previous observers. The dissections of the mouth are laboured, 
but, owing probably to the minuteness of the subject, Mr. Curtis pro- 
fesses his inability to determine whether the organs internal to the palpi 
are mandibles or maxille: the palpi themselves he believes to be biar- 
ticulate. The third joint of the antenne seems to be merely excentric, 
being produced considerably on its inner side, so as to give to the whole 
organ the appearance of being forked. The curious anterior appendages 
of the alary trunk are shown, by its separation into the segments of which 
it is composed, to be attached to the mesothorax, and consequently to be 
truely anterior wings or elytra. No mention whatever is made, nor do 
the figures indicate the existence, of the Prébalanciers of M. Latreille : 
organs which we believe to have been founded on some misconception on 
the part of that great entomologist. 
The species figured is distinguished by the minuteness of the second 
joint of the antenna, the small size of the second joint of the palpi, and 
the differently formed wings. It appears, from Mr. Dale’s information, 
to have been far from uncommon in Dorsetshire during the spring of 
1828, no less than five species of Andrena being infested with it, and 
every specimen taken of one, the And. barbilabris, having contained 
either its larve, pupe, or eruvie. Itis active, and even when running 
up and down a young shoot, has its elytra as well as its wings in conti- 
nual motion, and makes a buzz nearly as loud as that of a Sesia, twisting 
about its rather long tail, which it turns up like a Staphylinus. Two bees 
