50 BRITISH ICHNEUMONS. [ Exochus 

27. Fletcheri, Bridg. 
Exochus Fletcheri, Bridg. Trans. Ent. Soc. 1884, p. 432; Thoms. Deut. Ent. 
Zeits 1887p. 216; 3 2. 
Head glabrous, nitidulous and posteriorly constricted; face coarsely 
punctate, of g except centrally, of 9 with a fascia below the scrobes, 
flavous; vertical dots, which are at some distance from the eyes, and @ 
cheeks flavous. Antennae half length of body, with flagellum nigrescent 
throughout. Thorax immaculate; metathorax short with the areola 
apically distinctly explanate, emitting the obsolete costulae beyond its 
centre, at least in ¢. Scutellum black and subdeplanate. Abdomen 
somewhat coarsely punctate; basal segment glabrous, not longer than 
broad, laterally margined and bicarinate to centre; the following seg- 
ments transverse, with the second convex and closely punctate. Legs 
fulvous, with the coxae black and trochanters nigrescent ; tibiae red with 
their extreme base whitish; apices of the hind tarsal joints, and base of 
the first, infuscate. Wings with radices flavous, stigma nigrescent, the 
brachial cell subrectangular apically and nervellus intercepted below its 
centre. Length, 5 mm. 
This species, distinguished from the foregoing by the colouration of its 
hind tibiae, is allied to £. frontellus, Holmgr., but is smaller with no pale 
callosity before the radices ; it is similar in conformation to L’. erythronotus, 
though distinctly smaller. ‘Thomson transposed the sexes of Bridgman’s 
description. 
Two males and a female, doubtless in the Norwich Castle Museum, 
were bred by W. H. B. Fletcher from larvae of Ge/echia notatella, taken in 
Wicken Fen (cf. Entom. 1884, pp. 69—71). I beat two males from oak 
in marshes at Reydon and Walberswick, near Southwold, on 5th and 11th 
September, 1910 ; and possess a female bred from TZortrix fuligana by 
C. G. Barrett. 
28. parvispina, Thoms. 
Exochus parvispina, Thoms. Deut. Ent. Zeit. 1887, p. 216. 
A black species with the whole of the legs, except the coxae and the 
trochanters, red. Length, 543—6mm. ¢@?. 
This is a somewhat narrow and featureless species, easily known by 
negative characters: the face is immaculate black, the vertical pale dots 
are very small, the femora and tibiae are all entirely clear red, rarely with 
a black mark beneath the front femora. Thomson, who does not indicate 
his sexes, says its conformation is similar to that of 2. coronaf/us, though 
its size is smaller. It is extremely liable to be be mixed with the red- 
legged LE. prosopius group of species, from which its very short external 
hind calcaria distinguish it. 
Hitherto it has only been noticed from Sweden, though probably not 
rare with us; I have two examples of both sexes. Beaumont took the 
male at Kidbrook at the end of July, 1897, and the female at Harting in 
Sussex at the end of August, 1899; I found a female by sweeping reeds 
on the margin of a pond in the Bramford marshes near Ipswich on 
11th October, 1899, and a male in Tuddenham Fen, Suffolk, in the 
middle of August, 1906, 
