226 



Orthorrhapha brachycera. 



than in bistigma; generally the stigma stretches below the radial vein, 

 this then passing through it. Halteres black or brownish black. 



Female. Quite agreeing with the male ; the eighth ventral segment 

 somewhat large. 



Length S,/!— 5,5 mm., the latter size only reached by the female. 



This species is easily distinguished from bistigma by the position 

 of the stigma, and in the male by the totally different genitalia. 



Cl. rhyncJiops was hitherto not known as Danish, and has first 

 been introduced as belonging to our fauna in this year (1910), when 

 I took it in Jutland at Hald near Viborg on ^^/e — ^^/e; it was present 

 in great numbers generally sitting on stones in and by a rapidly 

 flowing brook. 



Geographical distribution: — Europe down into Styria, and in 

 England ; its northern limit lies in Denmark. 



14. Synampliotepa Loew. 

 Species of somewhat small size and of yellow colour. Head 



globular, as broad as thorax. Occiput arched, very short-haired. 



Eyes not specially large, round; they are somewhat broadly separated 



in both sexes; the facets are of equal size. The incisure in the inner 



eye-margin small. Vertex with three ocelli. The antennæ are inserted 

 near to each other, in the middle; they are 

 short, five-jointed ; the two basal joints short, 

 the third ovate, compressed, terminating in a 

 short, two-jointed style, the basal joint of which 

 is short, the apical joint terminales with a bristle- 

 shaped part. Epistoma is narrow; jowls very 

 short, but I have otherwise not been able to 

 parts. Thorax rectangular, somewhat arched 



above; pro- and metathorax small. There 



are no bristles on thorax, only scarcely per- 



ceptible dorsocentral hairs. Scutellum with 



short bristles. Metapleura bare. Abdomen 



consists of eight segments. The male genitalia 



are large, consisting of two pairs of lamellæ 



which are directed upwards; penis is very 



thick, curved upwards and forwards. In the 



female the abdomen terminales with a thick, 



conical ovipositor, directed upwards. The legs 



are somewhat slender, the hind legs the longest; the front coxæ only 



slightly elongated. The legs are short-haired, the tibiæ without apical 



spurs. There are two claws, two pulvilli, and a bristle-shaped em- 



Fig. 95. Antenna of 

 S.pallida. x 70. 



small. Proboscis is 

 examine the mouth 



Fig. 96. S.pallida, 

 male genitalia. 



