BRITISH ICHNEUMONS. QI 



clouded ; areolet narrowed above in c? ; tegulae fuscous, radix flavous, 

 stigma piceous and not paler basally. Length, 7-10 mm. 



It may be known by its transverse thyridii, which are much broader 

 than the intervening space ; the basal flagellar joints are longer than those 

 of B. derivator. The legs, especially the anterior, are rarely entirely 

 black ; the male sometimes has the seventh segment white-marked. 



I found a male of this species, which appears to have been hitherto 

 mixed in Britain with B. derogator, in Tuddenham Fen, Suffolk, on 

 24th August, 1900 ; and another in Mr. Bignell's collection, taken at 

 Bickleigh Vale, which is surrounded by oak woods some miles in extent, 

 in Devon, by sweeping the herbage, on ist August ; Mr. Beaumont also 

 has taken it at Blackheath, in June. Another male, which I took at 

 Lyndhurst, in August, appears to differ in nothing but its apically white 

 anterior coxae from the present species. It has not before been authenti- 

 cally recorded from Britain, though Stephens mentions it from near 

 London, in June, and I am not aware that it has hitherto been bred. On 

 the Continent it is widely distributed, occurring in woods, from June to 

 September, but becoming rarer in the more northern districts. 



7. basiglyptus, Kriech. 



Ichneumon basiglyptus, Kriecli. Ent. Nachr. 1890, ? ; Berth. Ann. Soc. Fr. 1895, p. 

 SS7, c5 9. 



Head narrowed behind the eyes ; mouth parts and vertical lunulae 

 white, $ also with sides of clypeus and of face, white. Antennae entirely 

 black in cj ; of ? sub-filiform, a little dilato-compressed and white-banded 

 centrally, with the apex obtuse. Thorax black throughout ; areola large, 

 semi-oval, apically emarginate and more glabrous than lateral areae, which 

 are indistinctly complete. Scutellum black, of $ rarely with two white 

 apical dots. Abdomen red, of ? elongate-oval ; segments one basally, five 

 apically, and six in part, or whole anus in (?, black ; ? with six and seven 

 white-marked; post-petiole and following segments strongly punctate 

 throughout, $ has the former convex with no carinae ; gastrocaeli trans- 

 verse and somewhat deep, $ with intervening space narrow. Legs stout, 

 red, darker in ^ ; coxae, trochanters and apices of posterior femora and 

 tibiae, black ; coxae not scopuliferous. Stigma piceous, centrally pale ; 

 areolet narrowed above. Length, 6-8 mm. 



There appear to be few structural features by which to distinguish this 

 species from its allies, nevertheless the white mouth of the female is 

 remarkable ; the male bears a very close resemblance to that of B. incubitor, 

 but it is a little smaller, with the frontal and external orbits, and usually 

 scutellum, immaculate, the radical callosities also are immaculate and the 

 stigma is centrally pale, as in B. chionoinus. 



I took two males, which agree well with the above description, at Lynd- 

 hurst, Hants., early in August, on flowers of Heracleuin sp/ioiidyliuin, and 

 have no doubt it is widely distributed, but overlooked, in Britain, since it 

 is found in Savoy, about Paris, &c., but has not been bred. 



8. rufidorsatus, Bridg. 



Ichneumon rufutorsatus, Bridg. Trans. Ent. Soc. 1887, p. 361 ; Berth. Ann. Soc. 

 Fr. 1895, P- 562 9 . 



