Lissomfa.] BRITISH ICHNEUMONS. 221 



swept a female from bracken in the Wilverley Inclosure, in the New 

 Forest, on 17th June, 1Q07. The only male I have seen is the specimen 

 provisionally named Lissonota palpulis, Thorns. (Trans. Ent. Soc. 1907, 

 p. 33), by me ; it was bred by Mr. Pool at Enfield, near London, from the 

 longicorn beetle, Tiiropiiim Gabriel i in 1906. 



29. segmentator, Fah. 



IchnenDion segmentator. Fab. E.S. ii. 163 («<?c Thunb.). Piiupla segmentator. 

 Fab. Piez. 114. Lissonota segiiientator, Gr. I.E. iii. 52, excll.varr. ; Zett. I.L. 

 384; Holmgr. Sv. Ak. Handl. 1854, p. 93; lib. cit. 1860, n. 10, p. 57; Tasch. 

 Zeits. Ges. Nat. 1863, p. 285 ; Thorns. O.K. viii. 769 et xiii. 1424, <? ?. Var. 

 nigricoxa, Strobl. Mit. nat. Ver. Steier. 1901, p. 28, i . 



Black, somewhat rugosely punctate and a little shining. Head not 

 large, narrowed behind the eyes ; mouth and clypeus fulvidous or 

 stramineous. Antennae somewhat stout and filiform, with the scape and 

 base of the flagellum rufescent or ferrugineous beneath ; of 9 longer 

 than half the body, with the basal flagellar joint half as long again as the 

 second, of ^ more slender and as long or nearly as long as the body. 

 Thorax gibbulous, cylindrical and immaculate ; metathorax strongly and 

 rugulosely punctate. Scutellum black. Abdomen black with the apical 

 margin of the first two, three, or four segments narrowly pale castaneous; 

 abdomen as long and as broad as the head and thorax, subpetiolate fusi- 

 form or nearly linear, narrower in J ; basal segment scabriculous, half as 

 long again as apically broad, transversely impressed before the apex and 

 gradually constricted to the basal fovea ; second and third segments sub- 

 quadrate, the former distinctly constricted basally ; terebra a little longer 

 than the abdomen with the spicula castaneous. Legs rufescent and 

 somewhat slender ; anterior coxae and trochanters of ^ usually flavous- 

 marked ; J with the hind coxae generally basally infuscate, rarely nearly 

 entirely black or red, their tibiae sometimes apically nigrescent and tarsi 

 infuscate. Wings normal or a little narrow, slightly clouded ; stigma 

 and radius pale fuscescent ; radix and tegulae stramineous ; areolet 

 sessile and obliquely pentagonal, emitting the recurrent nervure beyond its 

 centre. Length, 5 — 6 mm. 



It is said by Gravenhorst to differ from the majority of the species with 

 black abdomen in its more strongly constricted basal segment; and 

 Holmgren considered that it is easily known by the head being hardly as 

 broad as the thorax, its sessile areolet, and scabriculous metathorax and 

 basal segment. It may be considered as the type form of a small group 

 of species — tiign'di/is, errabutida, dubia, etc. — diflfering in ver)- little but 

 the puncturation of the abdomen and formation of its basal segment and 

 its terebra ; in the present, the abdomen is basally constricted, legs red 

 and antennae filiform. 



