BY A. RAFFRAY. 155' 



truncate, leviter infuscato, 2 leviter infuscato, transverse-, 3-4 

 latitudine sua paulo longioribus, 5 paulo longiori et prsesertim 

 erassiori, 6 quarto siraili, 7 eadem longitudine, intus paulo 

 producto, 8 subtransverso, obtuse producto, 9 et 10 majoribus, 

 trapezoidalibus, 9 leviter, 10 magis transversis piceis, 11 breviter 

 ovato, testaceo, basi truncato, apice acuminate Femoribus 

 anticis paulo et intermediis magis incrassatis, posticis supra basi 

 leviter constrictis et medio paululum inflatis ; trochanteribus 

 anticis basi dente valido acuto, intermediis medio dente valido, 

 compresso, apice obtuso prseditis. Metasternum longitudinaliter 

 late impressum. Long. 1-80-2 "40 mm. 



N.W. Australia; King George's Sound, Champion Bay, Bun- 

 bury and Swan River, W.A. 



Rybaxis antilope, n.sp. 

 (Plate x., fig. 43.) 



I have one £ only of this species which is similar to R. recta. 

 Sharp, as far as colouration of the body and the antennae, size, 

 general form, dorsal stria of the elytra and carinules of the 

 abdomen are concerned, but the sexual characters of the g are 

 very different. 



g. Caput quadratum, depressum, nitidum, inter oculos foveis 

 duabus magnis, fronte medio depresso et minute bifoveolato ; 

 epistomate magno, rhomboid aliter bicarinato. Antennae crasste, 

 articulis duobus primis maximis, 1 basi constricto, latere interno 

 obtuse dilatato, 2 quadrato, 3 obconico, longitudine sua parum 

 longiori, 4 eadem longitudine, ovato, 5 paulo longiori et prsesertim 

 erassiori, 6 quarto simili, 7 quadrato, 8 leviter transverso, 9, 10 

 piceis, inter se subsequalibus, trapezoidalibus et subtransversis, 11 

 testaceo, ovato, basi truncato. Femoribus omnibus incrassatis, 

 intermediis tumefactis, posticis supra, basi constrictis; trochan- 

 teribus anticis basi obtuse dentatis, intermediis compressis; tibiis 

 anticis et intermediis intus pone medium dente valido, brevi, 

 acuto prseditis. Metasternum breve, late subtriangulare, valde 

 impressum. Long. 2*10 mm. 



