14 MANDIBUI.ATA. HYMENOPTERA. 



Head and thorax brassy-black, slightly villose ; antenniE deep black ; abdomen 

 greeiiish-brass ; femora brassy-black; tibiae and tarsi luteous-yellow ; 

 wings of a dull brownish-luteous, with an irregular cloud in the middle, 

 and the apex fuscous. 



The male has the wings and markings thereon of a deeper hue, and a broad 

 orate dull velvety-black spot in the middle of the 4th, 5th, and 6th seg- 

 ments of the abdomen. The antenna are sometimes brownish at the apex. 

 Taken occasionally in the woods about London, in June : I have 



found it at Coombe and Darenth. 



Sp. 2. sericea. Subvillosa, nigro-csnea, antennis ferrugineis, abdomine supra 

 viridi-ceneo, pedibus luteis femoribus hasi nigro-wneis, alis nebula media 

 strigdque apicalifuscescentibus. (Long. corp. 4^ — 5| lin. ; Exp. Alar. 9 — 

 11 lin.) 



Te. sericea. LinnL — Donovan, v. xii. pi. 402. — Ab. sericea. Steph. Catal. 

 325. No. 3753. 



Head and thorax brassy-black, the sides of the latter sometimes greenish ; 

 antennae ferruginous, or luteous; abdomen bright greenish-brass above, 

 blackish beneath, with the sides greenish ; legs luteous, with the femora at 

 the base brassy-black or purplish ; wings hyaline, with a somewhat 

 triangular brownish cloud in the middle, and a streak of the same at the 

 apex. 



The male has a narrow, elongate, velvety-black patch on the middle of the 

 4th, 5th, 6th, and 7th segments of the abdomen. 

 Also found in the vicinity of the metropolis, in June, on heaths, 



and in woods : I once met with it in utter profusion flying round an 



old willow at Coombe wood. 



Genus VI.— AMASIS, Leach. 



Antenna 5-jointed, 2 basal joints short, 3rd rather long and slender, 4th 



shorter, 5th forming an obtuse club : mandibles bidentate : head small : 



eyes not approximating in the males : viings nearly as in Cimbex, the last 



submarginal areolet receiving 1 recurrent nervure, the 2nd two: body 



naked, punctured: abdomen with the 1st segment entire: legs short; 4 



posterior tibiae armed at the tip with a pair of acute spurs; tarsi with the 



penultimate joint much shorter than the antepenultimate. 



The acute pair of spurs at the apex of the 4 posterior tibiae of 



Amasis, exclusively of the different proportion of the joints of the 



tarsi, and the different number of those of the antennas — which are 



5 in number — the naked punctate depressed body, &c. sufficiently 



point out its distinction from the Tenthridinidas with clavate 



antenna?. 



fSp. 1. obscura. Totus nigra, alls albicantibus. (Long. corp. 3| lin.; Exp. 

 Alar. 8 lin.) 



