26 



Type. — I. 5424, South Australian Museum. A female 

 on a tag, antennae and fore wings on a slide. 



Baryconus gracilis, n. sp. 



9 • Head and thorax orange-yellow, the eyes and ocelli 

 black; abdomen golden-yellow, the horn on basal segment, a 

 patch laterad on both second and third segments 'posteriorly, 

 and a band across fifth segment dusky-black ; legs golden - 

 yellow, the posterior trochanters, femora more or less, and 

 apical two-thirds of tibiae, also apical half of intermediate 

 tibiae dusky-brown ; first seven antennal joints golden-yellow, 

 the apical five black. Head normal, the occiput not concave: 

 smooth and shining, with striae converging around the 

 mouth, the vertex showing in patches faint impressed 

 polygonal scaly sculpture ; lower face not depressed ; eyes not 

 very large, bare ; lateral ocelli a little separated from the eye 

 margins. Thorax nearly twice as long as greatest width ; 

 pronotum a little visible from above ; scutum narrowed 

 anteriorly, about as long as greatest width, the parapsidal 

 furrows distinct and complete and approaching close together 

 posteriorly ; median lobe at anterior half with fine impressed 

 polygonal scaly sculpture, the scutum otherwise smooth : 

 scutellum smooth, rather short, with a very fine foveate line 

 along anterior and posterior margins; metanotum unarmed. 

 Abdomen one-half longer than the head and thorax united ; 

 slender ; first segment somewhat longer than wide, with a 

 distinct horn projecting over the metanotum ; second segment 

 over twice as long as the first and somewhat longer than its 

 greatest width, the third a little shorter than the second, the 

 fourth not much shorter than the third, the fifth hardly 

 one-half as long as the fourth, the sixth subconiform and a 

 little longer than the fifth ; first and second longitudinally 

 striate, the third and fourth longitudinally reticulate-striate, 

 the fifth and sixth smooth. Forewings not quite attaining 

 apex of abdomen ; narrow, the apex rounded ; with two 

 fuscous transverse bands, the first covering apex of sub- 

 marginal and all marginal veins and as long as wide, followed 

 by a hyaline band which is plainly shorter than it, the second 

 fuscous band distinctly longer than the first, the wing apex 

 narrowly subhyaline : marginal cilia moderately long ; discal 

 cilia moderately fine and dense ; submarginal vein attaining 

 the costa at slightly before one-half wing length ; marginal 

 vein about as long as the stigmal, which is rather short, 

 straight, oblique ; postmarginal vein fully thrice as long as 

 the stigmal ; basal and median veins not indicated ; venation 

 pallid -yellow, in the infuscate bands fuscous. Antennae 

 12-jointecl ; scape slender ; pedicel fully twice as long as wide ; 



