. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. the Generic Name Ceratopogon, 129 by communis. The description of 1804 is altogether inade- quate, but in 1818 he adds the information " Alle Scheukel einfach, wehrlos," and in 18o0 " Mit nackten ; The name Ceratopogon must, therefore, be used for one of the groups with bare or practically bare wings. In his original description of C. communis (1804) Meigen says " Man findet sie im Sommer sehr hautig auf Schirmge- ; This habitat a
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. the Generic Name Ceratopogon, 129 by communis. The description of 1804 is altogether inade- quate, but in 1818 he adds the information " Alle Scheukel einfach, wehrlos," and in 18o0 " Mit nackten ; The name Ceratopogon must, therefore, be used for one of the groups with bare or practically bare wings. In his original description of C. communis (1804) Meigen says " Man findet sie im Sommer sehr hautig auf Schirmge- ; This habitat agrees with that of C. pavidus, Winn., and its allies, several species of which occur in great numbers on flower-heads of Angelica, but not with that of the other bare-winged groups, the females of which are preda- ceous and are only seldom found on flowers. Malloch, in his ' CnironomidaB of Illinois' (1915), has adopted the name Ceratopogon for this group of species (which KieffVr includes under the genera Atrichopogon and Keinpia), and I was at nist inclined to follow him in tins respect. However, in order to make quite sure, if possible, of the identity of C. communis, I wrote to Muus. Seguy, of the Paris Museum, asking him for information as to Meigen's type, it it should be in existence. His repoit was surprising, but decisive, as from his notes and the carefully drawn sketch of the wing of the type male which he sent (reproduced herewith) d£=^^£^^&^£Z£^4&2^2^. Ceratopogon communis, J. Drawn by E. StSguy. it is clear that C. communis differs in some respects from all the species described by Winnertz, and will not tit into any of the genera into which the group has been divided by Kit ffer, though it shows relations with several. The genus Ceratopogon must therefore for the present include only the single species communis, Mg., and may be diagnosed as follows, from M. iS^guy's information :— Ceratopogon (Meigen, 1803), Edwards, 1920. $ . Claws simple, equal. N
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