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Show 264 INSECTA. T. bovinua, L.; De Geer, Insect., VI, xii, 10, 11. An inc.h long; body brown above, grey beneath; eyes green; tibire yellow; transverse lines and triangular spots of pale yellow on the abdomen; wings transparent, with russet-brown nervures. The larva lives in the ground. It is elongated, cylindrical, and attenuated towards the head, which is armed with two hooks. The annuli of the body (twelve) are marked with raised cords. The nymph is naked, almost cylindrical, with two tubercles on the front, cilia on the margin of the annuli, and six points at the posterior extremity. It ascends to the surface of the soil when about to divest itself of its skin, in order to assume the form of a Tabanus, and protrudes the half of its body above it. Very common near Paris. T. maroccanua, Fab. Black, with golden-yellow spots on the abdomen.-The scourge of Camels, which, according to M. Desfontaines, are sometimes completely covered with these In-sects( 1). Sometimes the antennre are very evidently longer than the head and terminated by a joint forming an elongated cone, or almost cylindrical, frequently presenting but four rings. The ocelli are wanting in several. Some, in which the last joint of the antennre is always subulate and divided into five rings, have three ocelli. Those, in which the first joint is manifestly longer than the follow-ing one, and cylindrical; and where the latter is very short, and re-sembles a cup, form the ~ubgenus SYLvxus, Meig. (2) Those, in which the two first joints are cylindrical, and almost equal in size, compose the subgenus. tween the preceding genus a~d Tabanus, according to our method, belong to the family of the Notacanthi. (1) }'or the remaining species of this subgenus, see Lat., Fab., Meig., Palis de Beauv., Macq., Fallen and Wiedemann. (2) See Meigen. He quotes but a single species, the Tabanm mtuli, Fab., and to which he refers his T. italieu~. DIPTERA. 265 CHRYsops, Meig. To which belongs the 0. c~:ecutiens, Fab.; De G • golden, with purple points· theer, Insect .. , VI, xiii, 3 5 E bl k ' orax yell · h ' · yes dac ; abdomen yellowish above . hOWlS -grey, streaked with e at the end, on the two first ' w~t a broad black spot fork of the same colour on each annuli; two others, elongate~ an~ blackish-brown and tr ans versao! fo tnh e following ones ' and t'h ree Thconstantly persecuting the Horse( ~)s on the wings. They are ~ others are destitute of oc . • . . sometimes cylindr' l elh, the last JOint of th . Here a . Ica ' presents but four rl·n eir antenn~, , s m .gs. · H.JEMATOPOTA, Meig. ovIatl i. s sthub ulate' a n d the first is thick, and In e males(2). almost borders on an There, as in T HEXATOMA ' o lI' m He,1fatoma M . r ' eig. he antenn~, Ion er . the last joint is muc~ elothnagna tmed (th3e). preceding ones' are cylindrical; FAMILY IV. NOT ACANTHA~ The fourth family of th n· one, presents antennro of w:. ~pthera, as we II as the preceding IC t e third and last joint is divi- (1) See Fab, Lat M . ( 2) ' ., e•g., Fall w· The same author ., ted.' Macq. &c (3) Idem. s. ' · VoL. IV.-2 I |