448 A REVISION OF THE STAPHYLINIDiE OF AUSTRALIA, 



the terminal segment indistinct. Legs moderately long ; inter- 

 mediate coxae remote ; tarsi 4:5:5, the posterior pair with the 1st 

 joint longer than the 2nd. 



A genus of world-wide distribution. Some of the species are 

 found in ants' nests. 



56. Myrmedonia clavigera. 



Myrmedonia clavigera, Fauvel, Ann. Mus. Genov. XIII., p. 

 588 (1878). 



Brevis, antice attenuata, nitida, albo pilosa, abdomine supra 

 glabro, polito, crasso, inflato, segmentis 2-4 praesertim basi trans- 

 versim profunde sulcatis, capite elytrisque nigris, thorace 

 ferrugineo, abdomine nigro piceo, antennis femorumque apice 

 late piceis, illis articulis 4 primis pedibusque rufulis, articulo 

 11.° rufescente ; antennis brevibus, maxime clavatis, articulo 4.° 

 praesertimque 5-10 maxime transversis, latissimis ; capite parvo, 

 suborbiculato, basi constricto ; oculis parvis ; thorace parvo, 

 angusto, tertia parte longiore quam latiore, capite paulo latiore, 

 ovato, convexo, angulis posticis rotundatis ; elytris thorace duplo 

 latioribus, tertia parte brevioribus, convexis, subtiliter parce 

 asperulis ; abdomine medio elytris paulo latiore; segmento 7.° 

 angusto, supra apice vix sinuato, subtus longe obtuseque producto, 

 tarsis femorumque basi flavis. Long. 3^ mm. (Fvl.) 



North Shore, Sydney, New South Wales. 



During September last I found a single specimen of this species 

 in the nest of a small red ant ; it appears to be not uncommon in 

 the neighbourhood of Sydney as specimens are contained in most 

 of the collections I have seen. 



57. Myrmedonia insignicornis. 



Myrmedonia insignicornis, Fauvel, Ann. Mus. Genov. XIII., 

 p. 589 (1878). 



Facie et colore Porum ferrugineum satis simulans, sed capite 

 basi constricto et caeteris omnino diversa ; angusta, elongata, tota 

 rufa, nitida, oculis nigris ; corpore antico lateribus piloso, licet 



