340 CLASS VII I. 



Alucita). We begin, in enumerating the genera, with those that 

 approximate most nearly to the flies. 



A. Proboscis short, thick, terminated by two large labia. Setae 

 of haustellum in many only two. Palps with four joints, sometimes 

 five, mostly incurved or uniarticulate, straight. Tipula L. (Tipu- 

 larice or Tipulidce of the moderns). 



t Antennae scarcely longer than head (or at least shorter than 

 head and thorax together), mostly with eleven joints, filiform, moni- 

 liform or perfoliate. Wings broad, rounded at the apex. 



Aspistes HOFFMANNSEGG, MEIG. Antennae octarticulate, clavate 

 at the apex. Ocelli three. 



Sp. Aspistes lerolinensis, MEIG. Europ. Zweifl. Ins. I. p. 319, Tab. XI. fig. 16; 

 one line long, on the leaves of Tussilago petasites and the flowers of Daucus 

 carotta in North- Germany. 



Bibio GEOFFR., MEIG., (Hirtea FABR.) Antennae novemarticu- 

 late, perfoliate. Ocelli three. Tarsi with three pulvilli. Anterior 

 tibiae armed with a spine. 



Sp. Bibio Hard, Tipula Marci L., REAUMUR Ins. v. PI. ; PANZER, DeutscU. 

 Ins. Heft 95, No. 20 ; known amongst us by the name of black fly ; the 

 larva has ten pairs of air-slits ; it lives underground, and passes the winter ; 

 the pupa lies in an oblong round cavity of loosely compacted earth ; after 

 three or four weeks, early in the spring (in the last half of April), the per- 

 fect insect makes its appearance. Comp. LYONET'S observations and 

 figures, Recherches, &c., Ouvrage posthume, pp. 58 72, PI. 7. That these 

 flies cause injury to the blossom of apple-trees is a common opinion, but 

 entirely without proof; it is quite untrue, at least, that they lay then- eggs 

 in the blossoms. The larvae, which are found in apple-blossom, are those 

 of a small rostrated beetle, Anthonomus pomorum; see P. H. VAN BERCK, 

 V&rhandeling over de zwarte vliegen, Haarlem, 1807, 8vo. 



Dilophus MEIG. Antennae undecimarticulate, perfoliate. Ocelli 

 three. Thorax pectinate, with a double row of denticles. 



Sp. Dilophus vulgaris, Tipula febrilis L. ; MEIGEN Europ. zweifl. Ins. I. Tab. 

 XI. fig. i ; Diloph. collari& GUR., Iconogr. Ins. PI. 93, fig. 7, South 

 America, &c. 



Plecta HOFFMANNSEGG, MACQ. 



Penthretria MEIG., LATR. Antennae undecimarticulate, per- 

 foliate. Ocelli three. Palps exsert, incurved, quadriarticulate. Feet 

 unarmed, long. 



