OF NEW ZEALAND. 103 



T. sERicops. Smith, Cat. Hymen. Brit. Mus., Pt. IV., /;. 303 (1856). 



Female. Black ; the head and thorax covered with short cinereous 

 pubescence, the face covered with silvery pubescence ; the anterior 

 margin of the clypeus rounded ; the tij)s of the mandibles rufo-piceous. 

 The wings hyaline, the nervures rufo-fuscous, the marginal cell 

 truncate at the apex ; the hinder margin of the tegulse pale testaceous ; 

 the legs have a changeable silvery pubescence. The abdomen with a 

 brilliant silvery pile, most dense on the apical margins of the 

 segments. 



Length, 31 lines. 



T. DEPRESsus. Saussure, Reise der " Novara," Hymen., p. 70 (1867). 



Intense black, much depressed, smooth and impunctate ; wings 

 hyaline, the veins black. 

 Length, "35 inch. 



Genus-PISON. 



Spin. 

 Mandibles without teeth. Head as broad as the thorax ; three 

 ocelli in a triangle. Thorax short, oval ; scutellum moderate ; wings 

 normal ; one radial, three cubitals, the second petiolate ; three com- 

 plete discoidals ; the first recurrent nervure received at the junction 

 of the first and second cubitals ; the second at the junction of the 

 second and third cubitals. Anterior tarsi without any stiff hairs ; 

 posterior tibiae and tarsi without hairs or lateral spines. Abdomen 

 oval, short, scarcely peduncled. 



P. MOROsus. Smith, Cat. Hymen. Brit. Mus., Pt. l\.,p. 317 (1856). 



Female. Jet-black ; the face with a little silvery pubescence, the 

 head opaque. The mesothorax very delicately and closely punctured ; 

 an abbreviated shining raised line on each side over the tegulse ; the 

 metathorax obliquely strigosc, the central channel slightly impressed, 

 the striae uniting and crossing it; the truncation transversely rugose, 

 its margin slightly rounded ; the wings hyaline, their apical margins 

 slightly fuscous, the two recurrent nervures uniting with the nervures 

 of the petiolated submarginal cell. Abdomen smooth and shining ; 

 the margins of the segments slightly depressed. 



Length, 4- lines. 



P. TUBERCULATUs. Smith, Trans. Ent. Soc, 1869, p. 296. 



Male. Head and thorax opaque black, the abdomen shining. 

 Head : the face below the insertion of the antennae with silvery 



