CIMBEX CONNATA. 11 



variable. The above-named German authors name 

 the beech-feeding form C. fagi. 



The following parasites have been reported to feed 

 on the larvae of C. luteasmd C. sylvarum : Campoplex 

 argentatus, Rtz. ; G. holosericeus, Rtz. ; C. pubescens, 

 Rtz. ; Cryptus cimbicis, Rtz. ; C. incubitor, Gr. ; Hemi- 

 teles dispar, Rtz. ; Mesochorus cimbicis, Rtz. ; M. 

 splendidulus, Gr. ; Mesoleptus rufus, Gr. ; Paniscus 

 glaucopterus, L. ; P. testaceus, Gr. ; Pezomachus cur- 

 sitans, Gr. ; Tryphon mesoxanthus, Gr. ; T. rufus, 

 Gr. ; T. sorbi, Sax. ; Monodontomerus obsoletus, Fab. 



The species is of universal distribution in Britain, 

 the flies appearing in June. 



Continental distribution : General in Europe, also 

 in Siberia. 



2. CIMBEX CONNATA. 



Tenthredo connata, Schrank, Beitr. z. Naturg., 83 (1776). 

 Crabro maculatus, Fourc., E. P., ii, 361, 2. 

 Tenthredo montana, Pz., F. G., Heft 84, pi. xii. 



femorata, De Geer, Mem., ii, 2, 943. 



Cimbex decemmaculata, Leach, Z. M., iii, 106; Curtis, B. E., i, 

 pi. xli; Ste., 111., vii, 7,4. 



ornata, Lep., Mon., 28, 77 ; F. Fr., Hym., 4, pi. i, f. 2. 



maculata, Ste., 111., vii, 8, 7. 



connata, Voll., Tijd. Ent., vii, 50, pis. i and ii; Br. and 

 Zad., Schr. Ges. Konig., vi, 254, pi. ii, 

 f. 6 (lar.); Andre, Species, i, 26; Cat., 

 1*2. 



pallida, Ste., 111., vii, 7, 3, teste Kirby, List of Hym., i, 2. 



violascens, Thoms., Hym. Sc., i, 20, $ . 



Humboldtii, Ratz., Forst., Ins., iii, 135, 46. 



Fuscous-violaceous ; the head, pronotum, pleurae, tibiae, and tarsi, 

 brownish-testaceous, coxae and femora violaceous; abdomen bright 

 luteous, the basal two segments entirely, the third broadly in the 

 middle, apical segments at the sides, and the greater part of the ventral 

 surface, violaceous. Antenna} luteous. Head, thorax, and base of abdo- 

 men covered with a griseous pubescence, which is darker on the meta- 

 thorax. Wings hyaline, more or less spotted with fuscous at base, 

 middle, and apex. 



The ( is violet-black, the apex of abdomen dull fuscous, antennae and 

 tarsi luteous, tibiae brownish ; head, pronotum, and pleura dull brown. 

 The wings are coloured as the $ , but have a much more clearly defined 

 steel-bluish-violet iridescence. 



Length 10 12 lines. 



