JlemHeles.] BRITISH ICHNEUMONS. I7I 



The red-marked thorax allies this species with //. hadrocerus, and the 

 basally pure white tibiae with //. pictipes ; but the black antennae, tri- 

 coloured hind tibiae, flavidous pronotum and sub -glabrous post-petiole, 

 render it abundantly distinct. 



I swept the type of this species, which is in my collection, in Roydon 

 Fen near Diss, in Norfolk, on 8th June, 1900 ; and I possess another 

 example taken by Dr. Capron, presumably about Shere in Surrey. 



64. distinctus, Bridi;;. 



Hemiteles distimtus, Bridg. Trans. Ent. Soc. 1SS3, p. 151 ; Schm, Term. Fuz. 1897, 

 p. 549> ? • 



? . Head transverse and finely reticulate ; vertex sparsely pubescent ; 

 clyi)eus not distinctly reticulate, cheeks not buccate ; face transverse with 

 inner orbits parallel. Antennae slender, nearly length of body and apically 

 sub-incrassate ; basal flagellar joint four times longer than broad, the 

 following gradually decreasing in length with the ninth quadrate. Thorax 

 finely reticulate, half as long again as high ; metathorax with transverse 

 costae not very distinct ; petiolar area discreted. Abdomen sparsely 

 pubescent, with segments two and three pale castaneous and laterally 

 infuscate ; basal segment twice-and-half the length of its apical breadth ; 

 post-petiole longer than broad, double breadth of petiole, laterally sub- 

 parallel, finely and distinctly aciculate, with spiracles not prominent and 

 just behind centre ; second segment sub-elongate and finely aciculate, 

 with following transverse ; terebra one fourth of abdomen. Legs slender, 

 pale castaneous, with hind coxae basally piceous ; hind femora with apical 

 half, base and apex of their tibiae and all the tarsi, infuscate. Wings with 

 stigma and nervures piceous, radix flavidous, areolet pentagonal, nervelet 

 wanting and nervellus sub-opposite and antefurcal. Length, 4 mm. 



Bridgman says the structure of the metathorax, which is so poorly 

 described, and the sculpture of the abdomen are very distinctive. 



In coloration of the abdomen, antennal conformation and especially the 

 striate second segment, it might be supposed to possibly constitute the 

 opposite sex of //. dissimilis^ Grav., but the discreted petiolar area, more 

 finely sculptured metathorax with less complete costae and the colour of 

 the legs will at once distinguish it. Moreover, I have myself found the 

 true male. 



$. This sex differs from the female in having the antennae as long as 

 the body, with base of first flagellar joint red ; the metathorax sub- 

 scabriculous, with areola not broader than long and apically truncate ; the 

 second and third segments are broadly infuscate transversely before the 

 apex as well as laterally ; petiolar spiracles sub-prominent, intermediate 

 femora piceous and nervelet indicated. Length, 3^ mm. 



Bignell took the original female at Exeter on 23rd September, 1882. I 

 captured the typical male at Brandon in Suffolk, in a sandy place at the 

 roots of Senecio Jacolhiea, on June 8th, 1903, and possess another kindly 

 sent to me by Mr. Iv A. Butler on Se[)tember ist, 1900, from Abinger 

 Hammer in Surrey. It is unknown upon the Continent. 



