Heterogyna and Fossorial Hi/nienoptera. 221 



the impressed converging lines observable in all the 

 others, and the ? and ^ have the metathorax without 

 spines or teeth ; the species are very small, the ? 

 a good deal smaller than the <? and ? . Labial palpi 

 2-jointed, maxillary palpi 2-jointed ; <? antennae 12- 

 jointed, ? and ^ 10-jointed, club 2-jointed ; front wings 

 with one marginal, one submarginal, and one discoidal 

 cell. 



1. fi(()a.v, Ltr. Ess. I'Hist. Fourm. Fr. p. 46. Fig. Smith 

 Brit. Foss. Hym. pl. i. fig. 15, 16. 



^ black, shining ; mandibles, antennae, and legs 

 brown ; tarsi and inner margins of the mandibles 

 testaceous. Entire insect covered with long pale hairs ; 

 mandibles with three teeth ; scape of the antennae short, 

 about as long as the second joint of the flagellum, but 

 thicker ; the three apical joints are longer than the 

 others. Head and thorax finely rugose ; abdomen shining, 

 nodes of the petiole finely rugose ; wings hyaline, nervures 

 pale. Length 5 mill. 



? brown-black, shining ; mandibles, antennae, and 

 legs paler. Entire insect hairy, like the S ; man- 

 dibles with four teeth ; scape of the antennae reach- 

 ing to the eye ; the first joint of the flagellum is twice as 

 long as wide, the seven following, shorter than wide, the 

 ninth and tenth forming a decided club. Head and 

 thorax punctured ; abdomen shining and punctured, 

 nodes of the petiole somewhat rugose ; wings as in the <? . 

 Length 6 mill. 



^ pale yellow, shining, covered with long pale 

 hairs ; clypeus bidentate ; mandibles with four teeth ; 

 scape of the antennae not quite so long as the flagellum, 

 but reaching almost to the middle of the apical joint ; 

 apical joint almost as long as all the other joints of the 

 flagellum together, apical and penultimate joints forming 

 the club. Head and thorax with scattered punctures ; 

 metathorax rounded, without spines ; abdomen with 

 scattered punctures ; first joint of the petiole very wide 

 behind and rounded, second slightly transverse ; legs 

 hairy. Length 2 mill. 



Hah. — Southend and Deal, F. Smith. 



The habits of this little species, according to Forel 

 (Mitth. Schw. Entom. Gesehsch. vol. iii. No. 3, 1869), are 

 most interesting. It appears often or generally to live 



