the Hymenoptera of Fiji. 339 



26. Odynerus (Leionotus) mediocinctus, sp. ri. 



$. Nigra; mandibulis, clypeo, macula inter antennas, scapo, 

 flagelli articulo primo, prothorace, mesopleuris macula magna sul) 

 alis, tegulis, scutello fascia lata transversa, segmento mediano 

 macula apicali utrinquc, segmentis abdomihalibus primo, quinto 

 sextoque, pedibusque rufo-aurantiacis ; alis infumatis, venis fuscis. 



Long. 9 mm. 



$. Clypeus rather sparsely punctured, much longer than its 

 greatest breadth, rather narrowly subtruncate at the apex; a 

 short longitudinal carina between the antennae. Front strongly, 

 vertex more finely punctured; thorax sparsely, but rather strongly, 

 punctured, more finely on the pleurae than on the dorsal surface. 

 somewhat elongate; seutellum and postscutellum almost, flat; 

 the postscutellum subtriangular, narrowly rounded at the apex. 

 Median segment prolonged horizontally at the sides, the middle 

 strongly convex from the apex of the postscutellum. Abdomen 

 shining, with a few scattered punctures; first tergite scarcely 

 more than half as broad at the apex as the apex of the second, the 

 second somewhat constricted at the base, longer than its greatest 

 breadth; second sternite rather sparsely punctured, almost fiat. 

 Second abscissa of the radius very short, the second cubital cell 

 almost triangular. 



Hah. Fiji (R. Veitch). 1 $. 



It is possible that the colour of the markings lias been 

 altered by cyanide and should be yellow, as in the allied 

 species, 0. bizonatus, Sauss., and 0. quodi, Vach., to which 

 it is closely allied in structure and sculpture, though 

 differing much in the distribution of the colour on the 

 abdomen . 



27. Alastor (Paralastor ?) graeffei, Sauss. 



Alastor graeffei, Sauss., Stett. Entom. Zeit.. xxx. p. 55, 

 1869. 



Huh. Ovalau. 



Family VESPIDAE. 



28. Polistes macaensis, Fabr. 



Vespa macaensis, Fabr., Entom. Syst. ii. p. 25!), 1793. 

 Polistes macaensis, Fabr., Syst. Piez., p. 272, 1804. 



This species has been imported into Fiji, and into many 

 other Pacific Islands. 



