OF NEW ZEALAND. 101 



elliptic-oval in the females, nearly cylindrical in the males ; a naked 

 linear longitudinal space on the fifth segment. Males larger than the 

 females. Eadial cell narroAving from the middle towards the tip; 

 three cubitals, the first nearly as large as the two next together ; the 

 second receiving beyond its middle the first recurrent nervure; the third 

 narrowed for more than half its height towards the radial, receiving 

 beyond its middle the second recurrent nervure. 



H. soRDiDUs. Smith, Cat. Hymen. Brit. Mus., Pt. 1., p. 56 (1853). 



Black ; head and disc of the thorax obscurely green, very delicately 

 and closely punctured, the flagellum testaceous beneath ; mandibles 

 ferruginous ; the base of the metathorax covered with irregular radiat- 

 ing delicate strise ; tegulae testaceous ; wings sub-hyaline, iridescent, 

 nervures ferruginous. Legs dark testaceous, the tarsi palest ; the tibise 

 and tarsi have silvery glittering pubescence, in some lights partaking 

 of a golden lustre ; the floccus silvery white. Abdomen fuscous, 

 oblong-ovate, smooth, shining, and impunctate ; anal rima ferruginous ; 

 beneath testaceous, the margins of the segments thinly fringed with 

 pale pubescence. 



Length, 3| lines. 



H. FAMiLiARis. Smith, Trans. Ent. Soc, 1876, p. 486. 



Female. Black; the head and thorax above very closely and 

 delicately punctured, and slightly shining; the clypeus somewhat pro- 

 duced, shining, and with a few strong punctures ; the tips of the 

 mandibles ruf o-testaceous ; the flagellum rufo-piceous beneath. Thorax 

 delicately punctured above ; the metathorax truncate, with the margins 

 rounded, at the base above finely rugose ; wings hyaline, iridescent, 

 with the stigma and nervures testaceous ; legs with glittering, silvery- 

 white pubescence, the calcaria pale testaceous. Abdomen oblong- 

 ovate, shining, with the apical margins of the segments narrowly rufo- 

 testaceous ; beneath they are fringed with white hairs ; the apical 

 portion of the abdomen with a thin, short, white pubescence, which 

 becomes dense at the sides of the anal rima. 



Length, 2| lines. 



Sub-Order— EOSSORES. 



Neuters, if any, winged. Basal joint of the posterior tarsi 

 cylindrical. Females armed with a sting. Burrow in rotten wood, 

 sand-banks, or construct mud or paper nests. Larvae often feed on 

 insects, &c., provided by the mother. 



