Limnerium'] BRITISH ICHNEUMONS. 119 



Differs, says its author, from C. di'spar and (\ an'msis in the longer and 

 less compress(>d abdonu-n ; and the ^ — which appears probably a dis- 

 tinct species to mv — agu-cs in the slender and narrow structure of the 

 basal two segments with Casinaria tenuiventn's, Gra\-. Curtis in iXbo 

 gives an ultra-popular and quite useless description. 



Bridg. -Fitch differentiate it from the rest of the broad genus Limmria 

 by the characters : — Terebra one-fourth of abdomen, second 9 segment 

 not transverse, base and apex of hind tibiae dark, hind femora dark, 

 abdomen black, metathorax hardly concave, areolet entire, 



Gravenhcjrst only knew it from Austria ; but Curtis considered " this 

 insect is abundant in July and August, upon almost every umbelliferous 

 plant in fields and hedges, feeding in the flowers, and searching for cater- 

 pillars for the purpose of depositing eggs in them"; Mr. J. Weaver of 

 Petersfield in Hants sent him thence seventeen cocoons of Cerostoma 

 xylosiclla (Plutella cruciferarum) from which emerged only five moths and 

 twelve of the present species of parasite, which he quite certainly mis- 

 identified. His species was most probably Angitia feiustralis — cf. the 

 same host, given by Giraud under A. majalis, post. Nor do I put the 

 least faith in Fitch's statement (Entom, 1881, p. 140) that the present 

 species u'as raised from Lithocolletcs by Sang. 



alienatum, Grav. 



Caiiipoplcx alicnatiis, Gr. I.E. iii. 620, <J ? ; Limneria alicnatci, Bridg. -Fitch, 

 Entom. 1885, p. 105, i ? . 



Head black. Antennae setaceous and longer than half body. Thorax 

 black. Abdomen a little longer and a little narrower than head and thorax, 

 dorsally fusiform with the third to seventh segments laterally compressed; 

 anus of ^ obtuse, of 9 truncate ; petiole and anus black ; postpetiole 

 smooth and subquadrate, a little broader than long and more than double 

 the breadth of though a little shorter than the petiole, red and basally 

 becoming black; second to fourth segment red, in ^ sometimes apically 

 black ; terebra subexserted, with spicula red and apically subulate, and 

 the clavate valvulae black. Legs red with the coxae and trochanters 

 black ; hind tarsi and tibiae nigrescent, with the latter ferrugineous 

 towards their base. Wings infumate hyaline with the stigma and radius 

 infuscate, radix and tegulae pale stramineous ; areolet wanting, or ex- 

 tremely incomplete, small and elongately petiolate. Length, 7-8^ mm. 



Gravenhorst says this species has nearly the size and conformation of 

 his equally little known Campoplcx nitens, but with the areolet wanting, 

 the antennae a little stouter, the postpetiole a little broader and the 

 terebra much shorter. 



Bridg.-l-'itch difterentiate it from the remainder of the broad genus 

 Limmria by the characters : Abdomen black with its centre, the femora 

 and tibiae red, with hind tibiae apically dark ; terebra very short; scape 

 not pale beneath ; areolet wanting. 



Bonelli sent Gravenhorst two males and a female from Piedmont. 

 Giraud states (Ann. Soc. Fr. 1877, p. 403) that he bred it from Melitaai 

 trivia, on the strength of which Gaulle in iqoS records it from France. 

 Marshall in both his 1K70 and 1872 catalogues includes it as liritish 

 under the genus /.imntria, which is all that is at prt-sent km)wn ot the 

 species. Ccrtaiidv I do not i)Ossess it. 



J 



