500 MR. R. E. TURNER ON [May 12, 



with short, stiff pubescence. Both recurrent nervures are 

 received by the second cubital cell beyond the middle, the second 

 near the apex. The radial cell is narrow and pointed ; the first 

 cubital cell incompletely divided by a branch from the first trans- 

 verse cubital nervure, the second three times as long on the 

 cubital as on the radial nervure, the third nearly as long as the 

 first on the cubital and more than half as long again on the cubital 

 as on the radial nervure. The cubital nervure of the posterior 

 wing originates before the apex of the submedian cell. The 

 posterior tarsi are nearly twice as long as the tibia?. 



Black ; the clypeus, the front below the base of the antennse, 

 the scape of the antennee, and the posterior angles of the pronotum 

 yellow ; the mandibles, the four basal joints of the flagellum, the 

 tegulse and a curved line above them, a ti-ansverse spot on the 

 postscutellum, the apex of the first and third abdominal segments 

 rather broadly and of the fourth and fifth more narrowly, and 

 the legs (except the coxse and the postei-ior femora) ferruginous. 

 "Wings hyaline ; nervures black, ferruginous at the base. 



Length 10 mm., exp. 19 mm. 



Hah. Mackay, Queensland {Turner). 



Nearest to G. decoratus Handl. {ornatus Sm.), from West 

 Australia. 



GORTTES CYGNORUM, Sp. n. 



S . Clypeus broadly subtruncate at the apex, clothed with 

 silvery pubescence. Head finely and rather sparsely punctured, 

 with a delicate sulcus from the anterior ocellus nearly reaching the 

 base of the clypeus. Eyes strongly divergent towards the vertex, 

 less strongly towards the clypeus, separated from each other on 

 the front at the nearest point by a distance about equal to the 

 length of the scape and the first joint of the flagellum combined ; 

 the posterior ocelli about half as far again fiom each other as 

 from the eyes. Antennae shorter than the thorax and median 

 segment combined, moderately and veiy gradually thickened to 

 the apex, much nearer to the eyes than to each other. Pi-onotum 

 transverse and linear, slightly raised, and as broad as the head. 

 Thorax rather sparsely punctured ; the postscutellum coarsely 

 longitudinally striated. Median segment much shorter than the 

 mesonotum, almost vertically truncate posteriorly, rugose, with a 

 median sulcus on the truncation, the area at the base coarsely 

 longitudinally striated. Abdomen elongate-ovate, very finely 

 and closely punctured ; the first segment of about the same 

 length as the second, broadened to the ajiex, where it is more than 

 half as broad as the second segment. Both recurrent nervures 

 received by the second cubital cell, the distance between them 

 nearly two-thirds of the length of the cell. The second cubital 

 cell is as long on the cubital nervure as the third, but is much 

 narrowed on the radial nervure ; the cubital nervure is sharply 

 bent before the reception of the first recurrent nervure and has 

 from that point the appearance of being continuous with the 



