230 INSECTA. 
others cylindrical, form the genus Mrecaruinus(1). According to 
the same author, the Culex ciliatus of Fabricius should form another, 
his PsoropHora(2). ‘The ocelli are very distinct, and the legs of the 
female are ciliated; but the principal character consists in the pre- 
sence of two little appendages situated on the prothorax, one on 
each side. They appeared to us to be formed by the dilatation of 
the lateral extremities of the segment. M. Desvoidy, in relation to 
this subject, quotes a similar observation made on a species of Psy- 
choda by M. Leon Dufour, communicated to him by me. But he is 
mistaken in saying that it had never been published—we noticed it 
in the first edition of this work in the article Rhipiptera, and in that 
of Psychoda. 
In the other Nemocera, the proboscis is either very short 
and terminated by two large lips, or in the form of a siphon 
or rostrum, but directed perpendicularly or curved on the 
pectus. ‘The palpi are bent underneath, or turned up, but 
in that case, from one to two joints only. 
Linnzus comprised them in his genus 
Treuta.— Tipulariz, Lat. 
Which we will divide in the following manner. 
We form a first section with those species in which the antennze 
are evidently longer than the head, at least in the males, slender, 
filiform or setaceous, and composed of more than twelve joints in 
the greater number, and where the legs are leng and slender. 
Of these, some, always furnished with wings, never present ocelli. 
The palpi are always short. The head is not (or but very slightly) 
prolonged anteriorly. The wings are laid flat or tectiform, and 
have generally but few nervures that are longitudinal, divergent, and 
free posteriorly. The eyes are lunate, and the tibiz without spines. 
This subdivision consists of small species, which, while larve and 
nymphs, inhabit the water or vegetable galls. 
Sometimes the antennz are entirely covered with hairs, iongest in 
the males, and forming a triangular tuft. 
Most of their larve live in the water, and are allied to those of 
the Culices. Some have false feet. Others, besides, have appen- 
(1) Mém. de la Soc. d’Hist. Nat. de Par., III, 412. 
(2) Ibid, 412. 
