'734 AUSTRALIAN AND TASMANIAN PSELAPHID.E, 



RyBAXIS QUADRITUBERCULATA, II. sp. 



^. Colour and clothing much as in the preceding species. 



Head with rather wider impressions than in the preceding 

 species. Length 1^-2 mm. 



Hab. — Tasmania : Huon River, in tussocks; Hobart, Burnie, 

 Marrawah, Waratah(A. M. Lea). 



The colour is much as in the preceding species, except that the 

 ■ darker parts are rather less dark, and that the elytral suture is 

 scarcely deepened in colour. The tenth joint of antennae also 

 although always decidedly darker than tlie eleventh, is occasion- 

 ally no darker than the preceding ones. The antennae at first 

 appear to be alike in structure, but the fifth joint, although longer 

 than the sixth, is scarcely perceptibly longer than the fourth, the 

 sixth and seventh appear to be produced for a siiort distance 

 inwards for their entire length (instead of subtriangularly, 

 although from some directions the seventh appears subtriangularly 

 produced), the eighth is much as in that species, whilst the tenth 

 is rather smaller. The prothorax, elytra and abdomen are the 

 same, but the metasternum has two small tubercles (each much 

 smaller than the single one of the preceding species) behind each 

 of the hind coxae; the front trochanters are finely but acutely 

 dentate, and the front tibite are rather strongly dentate at about 

 one-third from the apex, with the space between the tooth and 

 the apex itself emarginate; in the former species the tooth, which 

 is very feeble, is distinctly nearer the base tlian the apex, and, 

 • except at the tooth itself, the curvature of the tibiae is not inter- 

 fered with. The females of tlie two species are practically 

 indistinguishable. 



In many respects close to E. quadricejjs, but smaller, and fifth 

 to eight joints not quite the same; the emargination of the front 

 tibiae is also distinctly nearer the apex. The two small tubercles 

 on each side of the metasternum distinguish it from E, adumbrdta. 

 In some respects close to the description of E. grandis (9 only 

 known to Raffray) but smaller, and head not darker than pro- 

 thorax, &c. 



