230 BRITISH ICHNEUMONS. 



terebra shortly exserted. Legs normal, black ; anterior femora apically, 

 and their tibiae more or less, rufescent, the hind ones basally red. Wings 

 sub-hyaline ; stigma and tegulae fuscous ; areolet coalesced above. 

 Length, 7-10 mm. 



The var. subalbeUiis has the head nearly entirely black, and the apices 

 of the hind trochanters white ; the var. persecutor has the base of the 

 mandibles and a dot on the tegulae white, the areolet not coalesced, the 

 basal segments sometimes black and the apical immaculate or with only 

 the seventh narrowly pale-margined. Both these varieties were originally 

 described by Gravenhorst from specimens sent to him by Hope from the 

 neighbourhood of Netley. 



No further hosts of this species have been noticed since Bridg.-Fitch 

 compiled Fidonia piniaria, Lobophora sexalata, Thera J2tiiiperata and 

 Melanippe fluctuata. All these were bred on the Continent, where it is 

 somewhat widely distributed. In Britain, it is recorded from Essex ; 

 Perkins has bred it from PJiibalapieryx tersata; and on 20th August, 1900, 

 Rev. C. D. Ash found a male had emerged from Cidaria tesfata, at Selby, 

 in Yorks. ; a female also emerged a few days later from the same host. 

 Stephens says neither the type nor varieties were common, about London, 

 in June and July ; Marquand records it from the district of Land's End ; 

 and Parfitt bred what he states is a variety of this species, with the inner 

 orbits alone flavous, from a larva feeding on citron leaves, in a greenhouse, 

 at Coaver, near Exeter, in March. 



12. tricingulatus, Grav. 



Ichneumon tricingitlatiis, Gr. Mem. Ac. Sc. Torin, 1820, p. 341 ; I. E. i. 505 ; Ste. 

 III. M. vii. 193,(5. Platylabiis iricingii!aitis,Y^esm. Nouv. Mem. Ac. Brux. 1844, p. 

 160 ; Thoms. Ann. Soc. Fr. 18S8, p. 125 ; Berth, lib. cit. 1896, p. 328 ; Thorns. O. E. 

 xix, 21 12, (J. 



Head black, narrowed behind the eyes ; frons closely punctate, scrobes 

 small and lunate ; genal costa a little elevated ; mouth, face and clypeus, 

 white, with a central black line. Antennae black ; scape white beneath. 

 Thorax black, pronotum and callus beneath radix, white ; mesonotum 

 shining, evenly punctate ; notauli obsolete ; areola transverse ; coxal areae 

 entire ; spiracles broad -oval. Scutellum entirely or apically white, its 

 lateral carinae entire. Abdomen black, with second segment for the most 

 part, and apical margin of first and third, red ; remainder immaculate ; 

 post-petiole broad, strongly bicarinate ; gastrocaeli and thyridii large and 

 somewhat deeply impressed. Legs normal, black ;' anterior coxae and 

 trochanters white-marked \ femora and tibiae, except apices of posterior, 

 red. Wings sub-hyaline ; stigma fuscous, tegulae white-marked ; areolet 

 sub-deltoid. Length, 8 mm. $ . 



[Pla/ylabus fallidens, Wesm. Bui. Ac. Brux. 1853, p. 320 ; Holmgr. Ichn. Suec. ii. 

 323 ; Berth. Ann. Soc. Fr. 1896, p. 325, ? ; Thoms. O. E. xix. 21 11, (5 ? . 



Head black, somewhat narrowed behind the eyes ; frons closely punc- 

 tate, scrobes small and lunate ; mandibles for the most part, facial, frontal 

 and external orbits, and sometimes dots at the apices of the cheeks and 

 on the vertex, white. Antennae slender, centrally white-banded and 

 slightly dilated. Thorax black ; pronotum and usually lines before and 

 beneath the radix white ; mesonotum not very dull, notauli obsolete ; 

 costulae wanting ; petiolar area entire. Scutellum white. Abdomen 



