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Show 230 lN"SECTA· others cylindrical, form the genus MEGARHINUs(l)· According to the same author, the Culex ciliatus of Fabricius should form another, his PsoROPHORA(2). 'fhe ocelli are very distinct, and the legs of the female are ciliated; but the principal character consists in the presence of two little appendages situated on the prothorax, one on each side. They appeared to us to be formed by the dilatation of the latenl 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 N emocera, the proboscis is either very short and terminated by two large lips, or in the form of a siphon or rostrum, hut 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. Linnreus comprised them in his genus TIPULA.-Tipularire, Lat. Which we will divide in the following manner. . We form a first section with those species in which the antenn:e 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 long and slender. Of these, some, always furnished with wings, never present ocelli. The pal pi 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 tibire without spines. This subdivision consists of small species, which, while larvre and nymphs, inhabit the water or vegetable galls. Sometimes the antennre are entirely covered with hairs, longest in the males, and forming a triangular tuft. Most of their larvre live in the water, and are allied to those of the Culices. Some have false feet. Others, besides, have appen· (1) Mem. de la. Soc. d'Hist. Nat. de Par., Ill, 412. (2) Ibid·, 412. ' ,. DIPT~RA. dages at the poste r1. 0r extremity of h · 231 :;.'h:~ Rea:~ur c~lls them vers pol;p:;~ b?;'~:_resembling strings or . ymp s mhablt the same ele Clr usual colour is red exterior tubes, situated at the ant~:nt, and respire by means of tw~ of them possess the faculty f ~lor ~xtremity of the body S These Insects are analo o SWimmmg. . orne na~~ by a~thors under th;:::,t: ~~e11~ul~ces, ~·? have been desig-ose, m which the antenn 'tpu re cuhciformea~ (somewhat) 0 • 1 • • re of both sexes . ceding ones ::d JOI~ts, the last differing but Ii~~ns~st of fourteen th h ' w ere the wings I . e rom the pre e ot er, compose the subgenus are aid hol'izoutally one ove; CoRETHRA, Meig. Tipula culiciformia De Ge . I ' body; legs and abdo~en et '. nsect., VI, xxii, Io, I 1. 'A br Those, in which the . gr.ey' nervures of the win . own of thirteen joints in thwmgls are mclined, and the antenn ....g. s h~Iry(I). h e rna es and · · .... are 1orm d :.:~h~ai::~;:.:he last, as in the s;:e~:;::/:::~:~r~•;nished wi;_h 1 • 1 ong, const1· '1 I I (.J c HIRONoMus, Meig. J • T .t . o which belon h ,. Ibid., XIX gs t e 7 tpule annulaire f 1 black band' 14, 15, which is of a brownish- o the. same author, s on the abdomen, and a black g:~y, With transverse p mt on the wing(2). TANYPus, 1\tlei·g' 1 . ' . ,, w~~re the wings are also e . ( teen JOIDts in both sexes p ndent, but the antennre co . . ' the others, like thos f' the penultimate very Ion . nslst of four-the last somewhat ~h~ ~he antennre of the femalesg 17 the 1'\lales; all genus we refer the IC er than the preceding on~:. mc;t gl~bular; T: o this sub 'tpU/e bigarree Id Ib - w h"l tl· sh, spotted w'i th b.l,a ck"· 'h XXIV' 19, which is ci~ ' IS ; antennre of th fi reous; , e emales terminat- (1 I r ( ) For the other s . . Insect., IV, P· 247 pec•es, see Meigen on the D' t . (2) Th ' et seq. tp era, and Lat. G e same works, and F b S ' en. Crust. et a • yst. Anti. • I, |
