88 MANDIBULATA. HYMENOPTERA. 



Sp. 8. gonager, Niger, nitidus, fcmoribus upice iibii&que bast luteo-testaceis^ 

 (Long. corp. 4 — 5 lin. ; Exp. Alar. 8| — 9§ lln.) 



Te. gonagra. Fabricius. — Dol. gonager. Steph. Catal. 338. JVb. 3244. 



Shining black, clothed with a thickish pubescence ; head and thorax finely 

 punctured ; all the femora at the apex, and the tibiss at the base, bright 

 testaceous ; metathoracic tubercles white ; wings hyaline, with the nervures 

 and stigma black, slightly tinted with fuscous towards the apes. 

 Abundant throughout the metropolitan district towards the end of 



June ; found also at Dover, and in Norfolk and Scotland. 



Sp. 9. vestigialis. Niger, nitidus, femoribus totis, tibiis bast, luteis, alishyalinis. 

 (Long. corp. 4 lin.; Exp. Alar. 8 lin.) 



Te. (Dol.) vestigialis. Klug.— Steph. Catal. 338. No. 3915. 



Shining black, clothed with a faint whitish pubescence; head and thorax finely 

 punctured, the former rather small in proportion; femora entirely luteouSj 

 and the extreme base of the tibiae the same ; the rest of the tibise and the 

 tarsi black; metathoracic spots white; wings hyaline, with fuscous nervures 

 and black stigma. 



Male with the tibise, except the apes of the hinder ones entirely rufous. 

 Rare ; I have taken it at Coombe wood in June, and obtained it 



from Birch wood. 



Genus XXIV.— EMPHYTUS, Leach. 



Aniennw filiform, 9-jointed, basal joint somewhat robust, 2nd small, 3 follow- 

 ing nearly of equal length, more slender than the foregoing, the remainder 

 gradually diminishing in length and thickness, the terminal joint ovate : 

 labrum somewhat orbicular : head transverse : ei/es prominent : ocelli 3 : 

 thorax ovate, subconvex : wings rather short, anterior with 2 marginal and 

 3 submarginal areolets, the former divided by a slightly curved nervure ; of 

 the others, the 1st is elongate, somewhat linear and bent, receiving 1 

 recurrent nervure ; the 2nd short, nearly triangular, receiving 2 recurrent 

 nervures ; the 3rd extending to the tip of the wings: abdomen rather long, 

 somewhat cylindric, obtuse in the males ; rather depressed, broad and cari- 

 nated in the females ; legs slender ; tibiat with a pair of short spurs at the 

 apex only. Larvae with 16 prolegs. 



This genus differs from the 2 foregoing, which have only 3 sub- 

 marginal areolets in the anterior wings, by having the 1st consider- 

 ably elongated, and the 2nd small ; it also differs much in habit, 

 and the species are often adorned with lively colours ; the wings are 

 rather short in proportion to the body : tlic sexes frequently vary 

 considerably from each other. 



