40 BRITISH ICHNEUMONS. \_Diapai 



August and September I took the small Thersihchiis rufipes, hitherto 

 unrecorded as British ; 1 have never met with it before, but this year I 

 took two females, and the niales were so plentiful that 1 often had more 

 than a score in the net at a time " (Trans. Norf. Soc. v. p. 64), at Earl- 

 ham near Norwich {I.e. 1894, p, 623). In my experience, however, this is 

 a spring species, and I have only once taken a pair in cop. on flowers of 

 angelica near Southwold in the autumn and these I believe to be distinct. 

 I have it from Shepton Mallet, Somerset, in May (Charbonnier) ; Shere, 

 Surrey (Capron) ; Feldon in Herts (Piffard) ; Tostock and Bungay in 

 June (Tuck) and Ipswich on 3rd May (Flatten). It almost certainly 

 "hibernates for 1 have beaten it from spruce in Bentley Woods as early as 

 13th March ; it occurs there and in Assington Thicks on birch in May, 

 when I have also swept it at Bramford, Icklingham and Brandon staunch ; 

 in June the female has been beaten from sallow at Upware in the Cam- 

 bridgeshire fens. 



7. microcephalus, Grav. 



Porizon iiiicroccplialiis, Gr. I.E. iii. 766, ? . Diaparsiis inicroccplialus. Thorns. 

 O.E. xiii. 1375, (? ?. Thcrsilochus xanthopiis, Holmgr. Sv. Ak. Handl. 1858, 

 p. 138, ? . (?) T. microcephalus, Brisch. Schr. Nat. Ges. Danz. 1880, p. 193, s ? . 



Head small, somewhat shining, little constricted posteriorly, with 

 vertex broad ; palpi, mandibles and apex of the smooth clypeus testa- 

 ceous. Antennae rather longer than half body and basally testaceous ; 

 flagellum 26-iointed with the first longer than second joint. Thorax 

 coarctate, subnitidulous and little longer than high ; metatliorax some- 

 what smooth and shining with the basal area incomplete. Abdomen 

 laterally compressed and black with the second segment entirely or apic- 

 ally and the following at least laterally rufescent ; basal segment slender 

 and elongate, the second longer than broad and terebra not shorter than 

 abdomen. Legs entirely testaceous, with tarsi alone apically subinfuscate. 

 Wings hyaline with the broad stigma piceous and tegulae Havidous ; 

 radial branch extending nearly to apex of wing ; recurrent nervure sub- 

 continuous. Length, 5 mm. 



The conformation of this species resembles that of Thersilochus modera- 

 tor, especially -in its gibbous thorax, in consequence of which Schm. here 

 synonymises T. xanihopus in place of T. palh'dipes, Holmgr., as given by 

 Thomson in 1889 ; and he also queries the synonymy of Brischke's, insect, 

 whose thorax is said to be "fast cylindrisch." The pale fulvous abdomen 

 and legs with at most their base alone black, together with the 9 slender 

 form and elongate terebra, which is not or hardly shorter than the abdo- 

 men, are distinctive. I possess a female named D. versutiis by Dr. Sigis- 

 mund Brauns, but in that species the hind femora are dark and the 9 

 flagellum but 22-jointed. 



Silesia, Sweden, Holland and France to central (iermany. Our only 

 authentic record is that of an example named by Bridgman and captured 

 by Bignell at Longbridge in Devon on 24th August. This species is, 

 however, not very uncommon with us, and I possess it from (jomshall in 

 August, 1899 (Butler) ; a dozen females from Shere (Capron); Bishops 

 Teignton and Botusfleming (Marshall); Marvel Copse in Isle of Wight in 

 October (Newbery) ; Felden in Herts (Piftard) and both sexes from 

 Bungay in Suffolk (Tuck). It is quite an autumn species, rarely seen 



