228 BRITISH ICHNEUMONS. 



Legs somewhat stout, black ; anterior femora apically, and tibiae internally, 

 rufescent or flavidous. Wings sub-hyaline ; stigma and tegulae fuscous ; 

 areolet deltoid, coalesced above. Length, lo mm. 



This species is easily recognised in both sexes by its white-banded an- 

 tennae, black abdomen, large and obliquely transverse gastrocaeli, mainly 

 black legs, and stout apophyses. 



It occurs in Belgium, Sweden and Germany, where it has been bred 

 from Platypteryx curvatula ; but the only British record I can find is from 

 Norfolk, where Stephens tells us it has been rarely found, but Bridgman 

 does not quote this in his county list, and he probably entertained mis- 

 givings regarding its authenticity. 



g. albinus, Grav. 



Hoplisvicuiis alhiiiiis, Gr. I. E. ii. 424, ? ; Wesm. Mem. couron. Ac. Belg. 1S59, 

 p. 87. Platylalms alhiuus, Thorns. O. E. xix. 21 10, c5 9 . H. erraluiiidiis, Gr. I. E. ii. 

 425, cJ (nee 7 dorso albis). F. erra/>iiiidits, Wesm. Nouv. M(5m. Ac. Biux. 1844, p. 162, 

 S; Bui. Ac. Brux. 1S48, p. 312, 9 ; Holmgr. Ichn. Suec. ii. 328 (part.); Thorns. Ann. 

 Sec. Fr. 1888, p. 125 ; Berth. /il>. cit. 1896, p. 326, i 9 . 



Head narrowed behind the eyes, somewhat shining, black ; frons obso- 

 letely punctulate, sub-glabrous, more or less centrally canaliculate, scrobes 

 small ; apices of cheeks sinuate ; clypeus apically rounded ; frontal orbits 

 stramineous ; $ also with centre of mandibles and the internal orbits 

 usually white. Antennae slender, centrally slightly dilated and white- 

 banded ; basal flagellar joints of 5 sometimes rufescent, scape of $ white 

 beneath. Thorax black, with lines beneath radix stramineous ; metathorax 

 declived from near its base ; areola obcordiform, not transverse ; costulae 

 incomplete or wanting ; petiolar area distincdy discreted ; spiracles elon- 

 gate. Scutellum and sometimes the post-scutellum stramineous ; the 

 latter being sometimes red. Abdomen black ; second and third and part 

 of fourth segments red ; the apical two or three narrowly white-margined ; 

 petiole slightly convex ; post-petiole narrow, glabrous, with no carinae and 

 its apical angles rounded ; gastrocaeli wanting or very superficial, the 

 intervening space sub-rugose. Legs normal, red or fulvous, with hind 

 femora stout ; coxae, trochanters, hind tarsi and apices of their tibiae, 

 black. Wings slightly clouded ; stigma usually dark, tegulae white-dotted ; 

 areolet convergent, though not coalesced, above ; nervellus oblique. 

 Length, 8-9 mm. 



Even though Thomson had not pointed out that Gravenhorst's descrip- 

 tion of errabundus, which obviously differed from the type examined by 

 Wesmael, could not stand for this species, since he writes of the apical 

 segments " dorso albis " (" stor fliick "), the latter's albifius should have 

 taken precedence and is here adopted. 



Brischke bred this species on the Continent, where it is somewhat 

 widely distributed, from Anticka sinuafa and A. ntbidata. It is said to 

 occur upon shrubs, in August, and is probably common in Britain ; 

 Bignell has taken it, at Bickleigh, in Devon, early in September ; Piffiu-d 

 has found it, at Felden, in Herts. \ Routledge, at Gelt wood, near Carlisle ; 

 and it has occurred to me, in the middle of June, among the swamps, in 

 Tuddenham Fen, in Suffolk ; and towards the end of August, on flowers 

 of Angelica sylvestris, at Matley Bog, in the New Forest. 



