21 



Stilicus umbratus, n. sp. 



d. Dull reddish-brown; head and prothorax much darker (somewhat 

 bronzy), mandibles, antennae, palpi, and legs flavous, or castaneous-flavous. With 

 very short ashen pubescence, and with a few dark hairs scattered about. 



Head rather large, moderately convex, and distinctly transverse, hind 

 angles strongly rounded, neck very thin ; punctures small and densely 

 crowded, under-surface shagreened and with conspicuous punctures. 

 Mandibles strong, acutely tridentate. Antennae extending to base of prothorax, 

 first joint longer than second and third combined, second as long as fourth, and 

 distinctly shorter than third, the others to tenth gradually becoming shorter 

 and more globular. Prothorax much narrower than head, hind angles strongly 

 rounded, sides moderately dilated to near apex, and then strongly obliquely 

 narrowed to neck; punctures much as on head. Elytra quadrate, longer and 

 nmch wider than prothorax ; with small crowded punctures, somewhat larger 

 than on head and prothorax, and with large ones scattered about, and forming 

 irregular rows. Under-surface of apical and subapical segments of abdomen 

 notched in middle. Front femora very feebly dentate, front tibiae slightly 

 notched about middle, front tarsi slightly wider and shorter than the others. 

 Length, 4.25-4.5 mm. 



9 • Differs in having the abdomen slightly wider and not notched, head 

 slightly wider, and antennae and legs slightly shorter. 



Hab. — Queensland: Cairns district and Mount Tambourine, sieved from 

 rotting leaves (A. M. Lea). Type, L 12637. 



About the size of 6^. orhiculatus, and with somewhat similar outlines, except 

 that the prothorax is more transverse, the head shorter, and antennae longer, 

 the finer sculpture and the colours, however, are very different. The head and 

 prothorax have an appearance as of dull bronze on the upper-surface, and of 

 some specimens on the under-surface also ; the elytra are usually paler than the 

 abdomen, and the larger punctures, usually being darker than the adjacent sur- 

 face, give them a speckled appearance; on several females almost the whole of 

 the under-surface is not much darker than the legs; the elytra and abdomen 

 usually have a faint coppery or bronzy tinge. The elytra are shining, the rest 

 of the upper-surface opaque. The pubescence on the head and prothorax is 

 extremely short and inconspicuous. The prothorax at first appears to be more 

 transverse than it really is, owing to the sudden narrowing of the front to 

 the neck ; it is very feebly ridged along the middle, with two shallow depressions 

 on each side of the ridge. The punctures on the head and prothorax are very 

 small, but may be seen on close examination, on the abdomen they are so 

 extremely small that the surface appears shagreened; many of the large punc- 

 tures on the elytra are irregularly conjoined, so as to present the appearance 

 of irregular striae ; near the suture they are mostly isolated. The only specimen 

 before me, from Mount Tambourine, has the whole of the upper-surface very 

 dark (almost black) except that the tip of the abdomen is obscurely reddish; 

 its elytra appear finely granulate, and with the large punctures more numerous 

 than on the others ; one from Cairns has the elytra and abdomen darker than 

 usual, although paler than on the one from Mount Tambourine. 



Thinocharis, Kraatz, Cat., p. 228. 

 BREVicoRNis, Fvl. Q. (also occurs TENUicoRNis, Lea (Lithocharis), 

 in New Guinea). Proc. Roy. Soc. Vict., 1909, 



p. 122. O., N.W.A. 



Thinocharis tenuicornis. Lea. 

 There are before me nine specimens, taken from rotting leaves at Mount 

 Tambourine, that appear to belong to this species; they differ, however, from 



