BY A. SIDNEY OLLIFF, F.E.S. 449 



supra sparsim flavo pubescente, abdomine sat dense breviter flavo 



pubescente ; capite utrinque vage, thorace elytrisque sparsim 



fortiter, abdomine sat dense multo subtilius, segmento 8.° crebre, 



punctatis ; antennis fusiformibus, crassulis, brevibus, articulis con- 



nexis, l.°crasso, 5-9 parum transversis, 10.° duobus praecedentibus 



fere longiore, 11.° praecedente duplo longiore, attenuato, apice flavo ; 



capite fortissime transverso, subquadrato ; oculis nragnis ; fronte 



late profnndeque impressa ; thorace subquadrato, capitis latitudine, 



circa basim parum angustato, lateribus vix sinuatis, angulis 



omnibus rotundatis, prope angulum posticum utrinque foveolato, 



basi summa supra scutellum transversim impresso-foveolato ; 



elytris thorace quarta parte latioribus, vix longioribus, subquad- 



ratis ; abdomine elytris sat angustiore, parallelo, apice vix 



attenuato, segrnentis 3-4 basi, 5-7 medio latius transversim impressis, 



septimi margine postice quasi dentatim producto, 8.° apice obtuso. 



Long. 5J- mm, (Fvl.) 



Australia. 



13. Silusa 



Erichson, Kaf. Mark, I., p. 377 (1837) ; Lacordaire, Gen. Col. 

 II., p. 45. 



Mentum broad, rather strongly emarginate in front. Ligula 

 slender, filiform, entire. No visible paraglossse. Maxillary palpi 

 with the 3rd joint a little longer than the 2nd, the terminal joint 

 very small, subulate. Labial palpi elongate, 2-jointed, the 2nd 

 joint membranous at the apex, slightly incrassate. Maxillae with 

 the lobes unequal ; the internal lobe very long, cultriform, the 

 upper part of the inner margin with short closely-placed spines ; 

 the external lobe much shorter, broad, membranous and strongly 

 pubescent at the extremity. Mandibles unarmed. Labrum very 

 small. Head slightly narrowed behind. Antennae rather short, 

 somewhat thickened towards the apex, the 2nd and 3rd obconical. 

 Prothorax broadly transverse, sides slightly rounded, with a 

 transverse depression at the bnse. Elytra truncate behind, 

 strongly emarginate near the external angles. Abdomen parallel- 

 sided. Legs rather short ; intermediate coxse near together ; 

 tarsi 4:4:5, the posterior pair with joints 1-4 subequal. 



