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Show 24 INSECTA. • proximated or separated by an interval about equal to that which is between each of them and the neighbouring eye. . Next come those in which the body is more or less oblong, With-out being filiform or linear. CoREUs, Fab. Where the body is partly oval, the last joint of the antennre ovoid or fusiform, frequently thicker than the preceding one, and usually shorter, and of equal length at most, in the others. They could be separated into several sections. which might even be considered as subgenera, according to the relative proportions and forms of the joints of their antennre(l). C. marginatus; Cimex marginatus, L.; Wolf. Cimic., I, iii, 20. Length six lines, and of a cinnamon-red; second and third joint of the antennre russet, the two others blackish; the two first longest of all; a small tooth at the internal base of the first; posterior sides of the thorax raised and rounded; abdomen dilated and turned up on the sides, with the middle of its superior surface red. On plants; it diffuses a strong odour which resem· bles that of an apple. The antennre of the other Geocorisre of the same subdivision terminate by an elongated, cylindrical, or filiform joint. They constitute a great portion of the genus LYGlEUS of Fabricius, and comprise besides that which he calls ALvnus. The posterior legs of the males are most frequently remarkable for the thickness of the thighs, and in a great number for the form of their tibire, which are sometimes compressed and have the edges dilated, as if membranous and winged, or foliaceous, and sometimes curved. Most of them are foreign to Europe. To these Lygrei must be referred those species in which the simple eyes are separated from each other by an interval about equal to that which exists between each eye and its neighbour, and in which (1) GoNooEnus. The last joint of the antennre shorter than the preceding one, and ovoid or oval; the latter and the second compressed, ~ngular or dilated; the first, or at least the second, longest of all. The C. sulcicorni8, insidiator, an· tennator, of Fabricius. Srno:MA.sTEs. The last joint of the antenn~ shorter than the preceding one, and bordering on an oval; the latter, filiform and simple. The C. marginatUB, acapha, spiniger, paradoxua, quadratua, Fab., and his Lygmua 8anctua. ConEus. The last joint of the antenn~ differing but little in length from the preceding one, and almost fusiform; the latter not compressed. The C. dentatf»', hirticorni8, clavicornis, acrydioidea, capitatus, Fab. HEMIPTERA. 25 the thorax is much wider posteriorly than before, or forms a triangle ' with a truncated apex. The body is generally less narrow than in the opposite division, or that which is composed of the Alydi. HoLHYMENIA, Lepel. and Serv. Where the second and third joints of the antennre are shaped like a palette( 1 ). P AOHYLis, Lepel. and Serv. Where the third only has that form(2). ANisosoELI, Lat. Where the antennre are filiform and not dilated(3). Certain Geocorisre of the same division, with a narrow and elongated body, projecting eyes, the ocelli approximated, and the thorax merely a little narrower before than behind, and almost trapezoidal, form the subgenus ALYnus, Fab.( 4' ' Now come Geocorisre with a very narrqw, long, filiform, or linear body. The antennre and legs are also proportionally smaller. LEPTOOORisA, Lat. Where the antennre are straight( 5). NEIDEs, Lat.-Berytus, Fab. Where those organs are geniculate( 6). (1) Encyc. Method., Insect., X, p. 61. Add Lyg~~JW biclavatua, Fab. (2) Encyc. Method., lb. p. 62. (3) Some have the posterior tihi~ edged with a membrane: the L. rmmbranaUWJ, compru8ipu,phyllopw, gonagra, foliauw, dilatatua, tragus, &c. Fab. The others are destitute of that membrane: the L. vulgus, grouipea, tenebr08U4, fulvicorn~, curvipea, profanw, phaaianua, bellicoaw, &c. Fab. Some species, with smaller antenn~, and of the length of the body, form· the subgenus N:EliiUTOPus of my Fam. Nat. du Reg. Animal. (4) See the Syst. Uyngator., Fab., p. 248. (5) The Gerris of Fabricius, with the exception of the vagabundua. (6) See Lat., Gener. Crust. et Insect., III, p. 126; and Oliv., Encyclop. Metho· dique. VoL. IV.-D |
