170 JilEMOIRS OF THE QUEENSLAND MUSEUM. 



the same place. Scape slender not reaching beyond the vertex; pedicel one and a half times^ 

 longer than wide, longer than any of the funicle joints of which 1 is longest, somewhat longer 

 than wide, 2 and 3 subquadrate, 4 a little wider than long, 6 distinctly wider than long; club 

 not especially enlarged, the flagellum regularly clavate, the club a little less than half the 

 length of the funicle; autennic 12-jointed, inserted at the clypeus. Frons very broad, the 

 lateral ocelli their own diameter from the eye margins, the eyes somewhat longer than the 

 cheeks. Fore wing with an oblique hairless line; marginal vein about thrice longer than wide, 

 the postraarginal very sliort, al50ut a third the length of the marginal, the stigmal a little 

 longer than the marginal. A single line of coarser discal cilia proximad of the hairless line; 

 marginal fringes very short. Mandibles with two rather stout, acute teeth. Head sublenticular, 

 the serobes not long, the surface finely, transversely sheened but with scattered thimble 

 punctures a line of whicb runs over the ])artially impunctate vertex along the eyes. Axillae 

 joined acutely at the meson. Scutum and axilUc sculptured like the head but the punctures 

 are rather numerous minute setigerous ones; scutellum glabrous. Jletapleura with white 

 pubescence; propodeum short at meson, with a median carina joined to the apex of scutellum, 

 widening laterad and there with distinct transverse ruga! (cephalodaterad), otherwise glabrous. 

 .\bdomeu pointed conic-ovate, a little longer than tlie rest of the body. Scutellum with sparse 

 pubescence. Segments 3 and (3 of abdomen transverse, shorter than 2, 7 apparently occupying 

 the rest of the surface (a third). Pronotuni transverse. Hind tibial sjiuvs double. 



From one female caught on a window, June 4, 1912. 



Hahitat: Gordonvale (Cairns), Queensland. 



Tjipe: No. Hy314S, Queensland Museum, Brisbane, tlie female on a tag: head, hind 

 tibia! and wing on a slide. 



TlOTRACXHMl'M.T.A new genus. 

 1. TETRACNEMELLA AUSTRALIENSIS new spceie.s. Ceuotype. 



Fcnuilf: — Length. 1.11.5 mm. 



Dark metallic blue, the abdomen pur|ile, the scutellum green; wings hyaline; legs and 

 antenna! pale yellow (coxa? not plainly seen). Antenna! inserted near the mouth border, the 

 serobes tolerably long, forming a triangle, the scape slender; pedicel metallic, bluish except at 

 apex, twice longer than wide at apex, much longer than any of the funicle joints of which 

 1-4 are subequal, each a little longer than wide. ."> and 6 longest, somewhat longer than wide 

 and a little wider than the others; chib slender, a little wider tlian the funicle and somewhat 

 over half its length. Mandibles with the second tO(jtli truncati'. rather broad, its lateral 

 apical angle subacute, the ajiex a little concaved. Axilla! widely separated. Marginal vein 

 somewhat thickened, a little longer than wide, the ])ostmargiijal vein a little shorter than the 

 marginal, the stigmal nearly twice longer than tlie marginal; oblique hairless line present. 

 Prons narrow, the cei>halic ocellus about its diameter (or a little less) from the eye margin; 

 cheeks nearly as long as the eyes; frons not prominent but the face infle.xed. Head with very 

 fine surface sculpture and with a few very minute setigerous punctures. Scutum and axillae- 

 like the head but the minute setigerous punctures rather numerous on the former. Scutellum 

 finely, densely punctulate or shagreened. Pronotum transverse. Proximal two segments of 

 abdomen greenish, scaly, the rest shining, the abdomen flat, pointed-ovate, as long as the thorax, 

 the ovipositor distinctly but very shortly extruded, white. Scutelluni overhanging meson of 

 propodeum. Pubescence not conspicuous. 



From one female cajiturcd l)y sweeping miscellaneous Ncgctatimi along the Herbert 

 River, February 26, 1913. 



lldJiilat: Halifax (Ingham), Xorthcrn Queensland. 



Tj/pc: No. Hi/ 31-1 1, (Queensland ^.rusenm, Rrisliane, the sjiecimen on a tag; fore wing- 

 and hind legs on a slide. 



