Plectisciis] BRITISH ICHNEUMONS. 9 



igi2. One of our commonest British species of this Tribe, though by 

 no means ubiquitous, and I liave not taken twenty specimens in as many 

 years; Bridgman and Bignell did not meet with it. I have it from 

 Braemar in julv, igoy, and Banchory in September, 19 lo (Elliott), a full 

 series from Share (Capron\ Nunton in Wilts (Marshall), Felden (Piftard) 

 and Finborough Park, Suffolk, in August (Tuck). In the same county I 

 once met with the male in the middle of May, but it is distinctly an 

 autumn species, occurring from Lackford Bridge on 22nd August, through 

 September at Tuddenham Fen and Walberswick wood to October, on 

 the 9th of which month 1 have takeii the female sitting quietly beneath 

 the gills of a fungus on elder in my Monks' Soham garden. Its con- 

 nection with fungi is proved by the fact that on 3rd November, 1897, I 

 took one actually in a ground fungus at Foxhall, near Ipswich. It also 

 has been found at Denny Wood and Matley Bog in the New Forest. 



2. eurystigma, Thoins. 

 Plectisciis eurystigma. Thorns. O.E. xii, 1301, ? . 



A black species with the legs and centre of abdomen testaceous, the 

 mesothorax piceous, and the alar stigma broad, emitting the radial 

 nervure from its centre. Length, 5 mm. 



Similar to P. coUaris in conformation, short cheeks and the first flagellar 

 joint being evidently longer than the second; but with the former longer, 

 the stigma broader, the apex of radial nervure shorter, the terebra shorter 

 than half abdomen, the anus less compressed and the basal petiolar 

 scrobes smaller. 



This female was only known from Esperod in Sweden till Bridgman 

 recorded it (Trans. Norf. Soc. 1894, p. 623) from Earlham, near Norwich, 

 in September. 



3. tener, Forst. 



Plectisciis tencr, Forst. Verb. pr. Rlieinl. 1871, p. 86, ? ; Bridg. Trans. Ent. 

 Soc. 1889, p. 432, i ? . 



Body not entirely rufcsccnt fiavous. Antennae with only nineteen 

 joints. Thorax with propleurac not entirely testaceous. Abdomen with 

 spiracles of ba.sal segment strongly and distinctly prominent; second 

 segment entirely smooth; terebra not longer than abdomen. 



We only know this name from its inclusion in Forster's meagre table 

 of species; Bridgman merely enumerates the above points of distinction 

 from our other species, adding that the male is in every way conformable 

 to the female; Schmiedeknecht adds nothing. Probably the number of 

 flagellar joints and conspicuous petiolar spiracles, should these characters 

 prove constant, are sufficient to distinguish it. I simply follow Forster 

 in placing it next to P. canal kulatiis in the table of species. 



'Phe original female was from Germany; the only other known capture 

 is that of a male and a female by Dr. Capron, presumably about Shere in 

 Surrey, which are not named in his collection, though doubtless repre- 

 sented by a male and two females agreeing with the above description. 

 Similar females have occurred to me on bracken at Wilverley in the New 

 Forest and Grovely Wood near Salisbury [cf. Ichn. Brit, iii, 137) during 

 the latter half of June. B2 



