664 FAUNA HAWAIIENSIS 



(6) Polynema tantalea, sp. nov. 



Male ferruginous, the head and the abdomen, except its base and the petiole, and 

 the apical joints of the tarsi black ; middle and hind tibiae blackish and their tarsi more 

 or less infuscate. Antennae black, the two basal joints clear yellow. Legs, except as 

 noted above, yellow. 



Antennae very long and slender filiform, much longer than the whole insect, the 

 first funicle joint considerably shorter than the second, the several following this not 

 differing much in length, the third being about five times as long as its greatest width, 

 whilst several of the apical joints are noticeably shorter than these basal ones. Thorax 

 dull, with very fine surface sculpture, the transverse line near the hind margin of the 

 scutellum distinct. Abdomen smooth and shining. Front wings evenly pubescent, 

 marginal vein punctiform, dark, the submarginal yellow, longest cilia not half as long as 

 the greatest width of the wing. Length r25 mm. 



Hab. Oahu ; 1500 — 2000 ft. 



(7) Polynema oahuensis, sp. nov. 



Ferruginous or yellowish brown, the head black, but the occipital region and 

 the face below the antennae is concolorous with the rest of the body ; apical joint 

 of the tarsi black, as well as the club and the three preceding antennal joints. 



Antennae of the ? with the first funicle joint quite short, not half as long as 

 the very long second joint, the pedicel obconic, the club as long as the two preceding 

 joints together. Thorax hardly at all shining, the surface sculpture very fine ; transverse 

 impressed line near the hind margin of the scutellum distinct ; abdomen smooth and 

 shining, the ovipositor distinctly subexserted, black. Wings evenly pubescent, marginal 

 vein punctiform, dark ; longest cilia of front wings, not more than half the length 

 of the greatest width of the wing. Length $ r5 mm. 



Hab. Oahu ; 1 500 — 2000 ft. 



(8) Polynema Iriscia, sp. nov. 



Ferruginous, a transverse line across the head in front, the apical joints of the 

 middle and hind tarsi, and the apical part of the abdomen, black or dark-coloured. The 

 hind tibiae infuscate on their apical portion. Basal two joints of antennae clear yellow, 

 the third yellowish but infuscate, the following shows more or less of a yellow tinge, 

 while most of the flagellum is black. 



Antennae of male very long, decidedly longer than the whole insect, filiform, 

 attenuate apically, scape short, wide in lateral aspect, pedicel very short, ovate or 

 subrotundate, first flagellar joint elongate, three times as long as its greatest width and 

 just about equal to the second, the latter and the following joints being all nearly equal 

 in length, and all fluted on their flattened sides. Mesonotum and scutellum dull, with 



