Lissoiwhi.'] BRITISH ICHNEUMONS. 223 



much less prominent, the apical hind tarsal joint is as long as the third, 

 and not about one-third shorter as in /.. scgiiien/ator, the thorax and scu- 

 tellum are identically sculptured throughout, but the head is distinctly a 

 little broader behind the eyes and the transverse anal nervure of the hind 

 wing distinctly more antefurcal. 



This species was bred by Mr. W. H. B. Fletcher at the end of Mav, 

 from larvae in fungi, from Arundel Park, as recorded by Bridgman ; but 

 no one appears to have since detected it either here or on the Continent. 

 The cocoon of the female referred to above is very pale testaceous, 7 mm. 

 in length and nearly two in breadth, subcylindrical but a little narrowed 

 at the anal extremity with the capital entirely and irregularly excised by 

 the emergence of the imago, and so transparent that the cast skins of the 

 parasite's larva and pupa are easily discernable. It was found by Mr. Pool 

 among Orclnsia inicans at Enfield, near London, in July, 1907 and un- 

 doubtedly both this and Fletcher's specimen were parasitic upon the 

 heteromerous coleopteron. 



31. nigridens, Thorns. 

 LissoHota nigridciis, Thorns. O.E. xiii. 1425 ; Schm. Opusc. Ichn. 1322, <r ? . 



A small black species with the legs red and hind trochanters black. 

 Head narrowed behind the eyes ; of ($ with the weak mandibles and the 

 clypeus black, latter not tomentose. Antennae elongate and slender 

 centrally subincrassate. Thorax and scutellum immaculate. Abdomen 

 black with incisures pale and the second segment not elongate ; ventral 

 plica pale. Legs red with the hind trochanters, and ^ coxae, black ; 

 claws small and not double length of the pulvilli. Radius not apically 

 inflexed. Length, 5 — 6 mm. 



This meagrely described species is said by its author to be similar to 

 L. segmentator and, like it, to have the \ertex angularly emarginate pos- 

 teriorly, but the 9 differs in having the head shorter, the mandibles duller, 

 the antennae subdilated before their apices with the third joint a little 

 longer than the fourth, the second to fourth abdominal segments obviously 

 reticulate and punctate with their apical margins pak^ the lerebra lon<'-er 

 and hind trochanters black ; and the J in Iiaving the clypeus and mandi- 

 bles black, the metathorax not rugulose, the mesopleurae nitidulous and 

 more finely alutaceo-punctatc, the second to fourth segments more ob- 

 viously punctate, the anterior coxae darker and the hind ones black. 



This species has hitherto been only noticed in Sweden, but I find that 

 it is not unconunon in Britain, where it has been much mixed with Z. jf^- 

 mentalor dind L. crrabunda ; 1 ha\e females taken by Cai)ron about Shore 

 in Surrey, Piffard about Felden in Herts, Beaumont at Blackheath on 3rd 



