lOr*) THE KNTOMOLOGIST. 



testaceous, fuscous at apex ; hind tarsi fuscous, basally paler 

 (occasionally the hind tibiae are also narrowly fuscous at the base), 

 hind coxae smooth and shining above. Wings hyaline, stigma and 

 nervures fuscous ; antennae as long as the body. Mesothorax 

 punctulate ; scutellum smoother, with sparse punctulation ; meta- 

 thorax subrugulose. First segment of the abdomen more than twice 

 as long as its median breadth, with scattered punctures, sides parallel 

 nearly as far as the rounded apex; second almost as long as third 

 with the usual impressed converging lines. enclosing a fairly smooth 

 triangular space ; other segments smooth and shining ; first three 

 segments sometimes broadly edged with testaceous. Terebra 

 subexserted (very slightly surpassing apex of abdomen). Length, 

 2^-3 mm. ; expands 5^-7 mm. 



Described from three males and one female. 



The rounded and not pointed apex of the first abdominal 

 segment will distinguish this species from all others in the 

 section excepting formosus ; in some specimens this segment 

 appears almost truncate, and were it not for the exserted 

 terebra of A. exilis, Hal., the insect might easily be confused 

 with that species. 



A solitary parasite, cocoon brownish-white, smooth, and very 

 similar to that of A. jnnicola, though not so rosy in colour. The 

 cocoon is constructed beneath the body of the host, and is 

 usually attached to a twig. After having voided its parasite, 

 the host appears to be incapable of locomotion, and remains 

 seemingly brooding over the cocoon, which position its dried 

 body retains long after death. 



Seems to be a fairly common parasite of Hemithea strigata 

 {thymiaria), from which host I bred it on May 25th, 1911 ; 

 May 14th, 1912; May 16th, 1912; and June 8th, 1914. 



A. pallidipes, Rein.* 



Has many times been bred as a gregarious parasite from 

 larvae of the genus Plusia. In the New Forest it appears to be 

 uncommon ; at any rate, I have obtained no specimens from 

 the numerous larvae of P. gamma and P. cJirysitis I have reared. 

 The rugulose metathorax easily distinguishes it from its near 

 relatives. 



A. bicolor, Nees.t 



The only specimen I have seen is a female without data, 

 formerly in Fitch's collection and now in the possession of 

 Mr. B. Harwood, The terebra is from a quarter to one third 

 as long as the abdomen, and there is scarcely a trace of an 

 elbow at the point where the first abscissa of the radius joins 

 the first intercubital nervure. 



* ' Berl. Ent. Zeit.,' 1881, p. 48. f ' Mon.,' i, 181. 



