158 BRITISH ICHNEUMONS. [Lathroplex 



lateral pctiolar sulci wanting, postpctiole often somewhat broad with no 

 lateral scrobes ; second segment basally alutaceous and evidently punc- 

 tate ; terebra short and subexserted, with spicula slender. Legs with the 

 tibiae incrassate, calcaria short and both unguiculi and claws small. 

 Wings with the radial cell elongate and somewhat broad, its apical 

 abscissa at least twice as long as the basal ; apex of discoidal cell hardly 

 broader than its base, with its lower angle right ; nervellus oblique and 

 subgeniculate. 



1. infernalis, Grav. 



Mesoleptiis infernalis, Gr. I.E. ii. 16, ? ; Ste. IIlus. M. vii. 213. LatJiroplcx 

 infernalis, Pfank. Zeits. Hym-Dip. 190fi, p. 19, ? . 



Head immaculate. Antennae filiform and a little longer than half 

 body, with fiagellum not particularly stout. Thorax gibbous, with meta- 

 thoracic areae indistinct ; areola and petiolar area confluent. Abdomen 

 oblong-ovate, clavate, a little longer and slightlv narrower than iiead and 

 thorax; basal segment gradually a little dilated apically, all the remainder 

 subglaucous-margined ; postpetiole distinctly broader than petiole and 

 trifoveolate ; second segment transverse ; ventral plica citrinous ; terebra 

 stout and hardly exserted. Legs normal and black, front ones with tibiae 

 and except basally femora red ; posterior tibiae internally obsoletely 

 testaceous. Wings hyaline and iridescent with the stigma, radix and 

 tegulae stramineous; areolet regularly rhomboidal and petiolate, emitting 

 recurrent nervure somewhat beyond its centre ; apex of discoidal cell 

 rectangular below. Length, 5 mm. 



The type was taken by Bonelli during April in Piedmont. Stephens 

 correctly identified his six specimens, now in Mus. Brit., which he "found 

 near London in June, not common," with Gravenhorst's female. They 

 certainly belong to the present genus (as I stated at Ichn. Brit. iv. 216), 

 as set forth by Thomson ; and the Italian type specimen was relegated 

 to the same genus by Pfankuch. I have, however, heard of no indigenous 

 records since 1835, except the female referred to under Pyracmoji obscuripes, 

 ante, and this is without data. 



GONOTYPA, Thomson. 

 Thorns. O.E. xi. 1887, 1136 ; (?) Gonotypiis, Forst. Verb. pr. Rheinl. 1868, p. 153. 



Head with the vertex broad, not at all constricted; cheeks subbuccate, 

 the clypeal fovea, peristomium and mandibles small. Antennal fiagellum 

 elongate, slender and filiform. Thorax elongate and cylindrical; meta- 

 thoracic areola short and triangular; costulae wanting. Abdomen strongly 

 nitidulous and linear; basal segment short and stout with the petiolar 

 glymmae distinct, and the indistinctly discreted and hardly broader post- 

 petiole quadrate; second to seventh segments parallel-sided, gradually 

 becoming more nitidulous apically with the seventh excised and in 9 th^' 

 third to seventh discally strongly emarginate ; terebra reflexed, very stout 

 and shorter than basal segment. Legs not stout ; calcaria not elongate ; 

 tarsi slender with small and simple claws. Wings with areolet wanting ; 

 apical abscissa of radius distinctly longer than basal ; both discoidal and 

 brachial cells apically rubrectangular below ; nervellus oblique and dis- 

 tinctly geniculate below its centre. 



