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Show 252 INSECTA. LAsxvs, Wied. . f the sexes, l.S almost entirely occupie.d Where the head, m on.e .0 t of the an t en nre is very long, almost h-by the eyes, and the last J010 • rent terminal seta. The ab-near compressed, an d WI't hout any app• a large gibbous at b ase, an d dome, n is volum.m ous. Th e labrum IS ' truncated at the end. . . debted to the kindness of M. In one specimen, 1r 0r wh1ch I amd m f h b 1 1 ng the under part o t e O< y de L b is exten s a 0 · acordaire, the pro. osc terl.O r ext rem 'lty • This character, With d proJ· ects beyond Its pos. · . h t this subgenus naturally be-an to mdicate t a ( ) some others, would seem . 1 • a and come!J near Panops 1 • longs to the tn'b e of the Vesicu arl ' U Lat _ "f'olucella, Fa b. SIA, • . · f the antennre 1. s ovoido-conical, obtuse or Where the last JOIDt 0 . d b a stilet. The palpi are not truncated a t the end ' and termmate y apparenTth. e species are pecur I ar t o the southern countries of Europe and to Africa(2). PHTHIRIA, Meig. b t the palpi are distinct(3). Similar to Usia in the ~n.ten?re, 'du tly shorter than the lirst; the . h ond JOint 1s ev1 en . . Sometimes t e sec r d . 1 and terminated m a pomt, last is long, generally almost cy lD rtca ' as in BOMBYLIVS, proper. "\V'here the pal pi are very apparendt .. tl a woolly down, which co· d nsely covere WI 1 • • h These Insects are e . . the environs of Paris IS t e lours it. The most comm?n spe~ees ~eer Insect., VI, xv' 10, 11. B. major, L.; B_· b~c~on, nd ~ntirely covered with yel- ; From four to five hnes m l:ngth, a d black. external half of the . h · .. proboscis long an ' lowlsh-grey au s, . d d' hanous· legs fulvous. wings blackish, the remam er lap ' (1) Wied., Anal. Entom., I, 3. t IV 314. See also Fab., and Meig. (2) Lat. Gener. Crust. et Insec ., ' (3) The same works. DIPTERA. 253 Geoffroy has confounded the above genus with Asilus(l). GERON, Meig. This genus appears to be distinguished from Bombylius only by the more remarkable elongation of the last joint of the antennre and its subulate termination, and by the wings which have one transverse nervure less near the posterior margin, so that the number of the closed cells of that margin is less(2). The genus TMipsormyza of Wiedemann-Dipt. Exot., I, iv-appears to approximate to the preceding Insects and to Phthiria. That called .flmictus I presume also approaches them; in both the first j,oint of the antennre is longer than the second, and cylindrical, a character which approximates them to Geron. The wings in .flmictus, howevet·, are somewhat different from those of the preceding genera. In the other species the proboscis is, at most, as long as the head, and inflated at the end; the first joint of their antennre is the largest of all. Those, in which it is much larger than in the following ones, form the genus PLoAs, Conophorus, Meig.(3) And those in which it is simply larger, without any remarkable increase of thickness, the Where the abdomen is more elongated and almost conical. • ANTHRAx, Scop. Fab.-Musca, Lin.-.l.lnthracii, Lat. Similar to Bombylius; but where the body is depressed, or but - (1) Ibid., Latreille, Meigen, Fabricius, Macquart and Olivier, article Bomhille. The genera Cor8omyza and Tbmomyza of Wiedeman-Dipt. Exot.-are unknown to me. In the first, the last joint of the antenna: is twice the length of the preceding ones, and compressed and dilated at the end. The second appears to approach Cyllenia and Mulion. (2) See Meigen. (3) Lat. Gener., IV, 312; Fab., Meig., Hacq. (4) Lat., Ibid., and Meig. |
