184 AX UMiESCRIIiED SPECIES OF CLYTOOOiSSrUS SKUSE. 



slightly proclinate hairs, the lateral and ventral surfaces glabrous; palpi and 

 mouth-parts dark brown. Antennae with the tirst segment orange, stout, nnrrow 

 at base, with two or three pale, transverse rings beyond midlength ; seeond segment 

 dark brown, the base obscure yellow; flagellum broken. Summit of the vertex im- 

 mediately behind the antennal bases. Head fiery orange with numerous short 

 black setae that become very long and dense on the curiously baccate post-genae. 

 Eyes relatively small with fine ommatidia. 



Pronotum narrow, flattened, dull orange. Mesonotal praescutuni fiery oningo, 

 the margin with a moderately broad white line; interspaces pale with numerous, 

 short, erect setae; the broad median stripe is split by a capillary white line; 

 scutum orange, the lobes fiery orange, margined prosimally and caudally and less 

 distinctly laterally with white; seutellum moderately projecting, orange, with a large 

 whitisi] spot on either side; postnotum orange. Pleura orange, spotted with wiiite; 

 a s]iot on the mesepisternum, immediately behind the anterior spiracle; anotlier on 

 the mesepimeron immediately beneath the wing-base; three others surrounding the 

 posterior spiracle; a large blotch on the sides of the mesosternum between the 

 fore and middle coxae. Halteres with the base of the stem orange, the remainder 

 of the halteres broken. Legs with the coxae orange, more or less whitish on the 

 outer face, least distinct on the ]iosterior coxae; coxae clothed with delicate liairs. 

 shortest on the posterior coxae: trochanters blackish, indistinctly margined dis- 

 l.illy with red; femora and tibiae black; tarsi broken; fore legs much shorter than 

 tlie hind legs. Wing's with a strong yellowish tinge, darkening into fulvous blown 

 in the apical and caudal portions; veins conspicuously yellow; centres of cells 

 M, Ut Mi, .2nd M2, Mi, Cm, 1st A and 2Hd A paler. Venation: Sci lacking, 

 Sc2 ending in Ih just before r; cell B-> narrowed at its inner end; cell Jst M\i 

 large, pentagonal; iietiole of cell Mx short, about one-half of m. Macrotrichiae 

 on the veins lacking or very sparee. 



Abdomen with the first tergite narrowly margined with orange, the disk deep 

 black with a large rounded white spot near each cephalic — lateral angle; suture 

 between tergites one and two ill-defined; tergite two with the basal half orange 

 with a small, median, basal, black mark, the caudal half black witli a rouiuled, 

 lateral, white spot and much fainter submedian sjiots; tergites three to six black, 

 each with the conspicuous, rounded, lateral, white spot, the third and fifth also 

 with fairly distinct, submedian, white markings; each of these black tergites, 

 jtroximad and caudad of the lateral white s|iots, have about six or seven small, 

 lens-shaped silvery dots arranged in a roughly oblique group; on each of the 

 second and thii-d tergites, cephalad of the lateral wliite spots is a small, transverse, 

 'moressed area as in many other Tipuline ci'ane-flies; seventh to ninth tergites 

 orange. Sternites uniformly orange. On the ventral surface of the abdomen, 

 nine distinct and approximately subequal sternites are visible; on the dorsal sur- 

 face, however, there are ten tergites visible unless we consider the first tergite as 

 fused with the very long second tergite as above described ; in this latter case, the 

 basal tergite is as long as the basal three sternites; tergites three to seven are 

 approximately e(|ual in length, but the last two are greatly narrowed. Ovipositor 

 horn-coloured, the tergal valves long, straiglit and very slender; sternal valves 

 much shorter, compressed, the tips obliquely truncated, 

 mi?;.— New South Wales. 



[fiihitiipe, 9, Ulong, on tlie spurs of the Dorri'io Talilejand. nltiludc aliout 2<ll'll 

 reel, .Vpril. 1017 (W. Heron). 

 Typo returned to Dr. Tillyard. 



