CERAMBYCIDAE. 



153 



(b) Antennae nearly naked, only very shortly ciliated on under side. 



Prothorax and legs only with very small, whitish setulae. First 

 joint of antennae narrower at apex, on upper side with two blunt 

 teeth nearly opposite subbasal spine. Upper eyes very convex, 

 semiglobose .......... 0. dentifer Auriv. 



B. First joint of antennae at apex on under side with a distinct tooth or prominence, 

 nearly cylindrical or only slightly tapering between apex and subbasal spine. Pronotum in 

 middle at least as broad as elytra at base, strongly punctured all over and without smooth 

 median line. Byes rather flat. Elytra with yellowish-white spots. 



(a) Antennae pale yellow. Ground colour of elytra brownish-yellow . 0. flavicomis Auriv. 



(b) Antennae brownish, first joint blackish. Ground colour of elytra dark 



brown ........... 0. teretiscapus Auriv. 



Leptocyrtinus, gen. nov. 



Corpus remote setulosum ; antennae pilosae. Caput inter antennas sub- 

 planum. Frons transversa. Oculi late divisi ; lobi superiores rotundati, 

 ab antennis parum remoti. Antennae feminae corpore parum longiores ; 

 scapus elongato-conicus articulo 3° longior. Pronotum elongatum, utrinque 

 leviter rotundatum, latitudine basali multo longius. Scutellum breve, rotun- 

 datum, transversum. Elytra ad basin pronoto liaud latiora humeris nullis, 

 subcylindrica, supra plana, apice conjunctim late rotundata, subseriatim 

 punctata. Pedes breves ; femora valde petiolato-clavata. 



Allied to the genus Cyrtillus Auriv., of Queensland, but differing in having 

 the third joint of the antennae much shorter than the first, and the elytra more 

 cylindrical, neither narrowed nor declivous towards the base. 



35. Leptocyrtinus nitidus, sp. n. (Plate I, fig. 7). 



Niger, nitidus, submetallicus, articulis antennarum femoribusque ad 

 basin pallidis ; vertex nitidus sparse punctulatus linea media brevi impressus. 

 Prothorax punctatus supra in medio transverse striolatus. Elytra supra maculis 

 binis elongatis dense albo-pubescentibus ornata. Latera pectoris profunde 

 punctata. Abdomen fere laeve. Pedes pallidiores ; clava femorum leviter 

 infuscata. 



Long, corporis 2 mm. 



One female, Upolu : Malololelei, 2000 ft., 22.xi.1924 (Buxton and Hopkins). 



