liY H. J. CARTER. 215 



without channel or foliation, extreme border very narrow through- 

 out, posterior angles defined and obtuse but not dentat^; disc 

 canaliculate, medial line not extending to either margin and 

 sometimes broken in the middle, a wide foveate impression on 

 each side of this, the whole surface distinctly and closely punctate. 

 Scutellum rounded behind and punctate Elytra wider than 

 prothorax at base, and about twice as long, sluMdders rounded, 

 epipleural fold evident, elongate-ovate, not parallel, widest behind 

 middle, finely tapering to apex, striate, with ten striie on each 

 elytron (including .sides), intervals convex and finely punctate, 

 the lateral striae showing lines of fine, close punctures, not seen 

 on the discal striae; without evident margin, epipleurse rapidly 

 narrowing and coarsely punctate. Abdomen and femora finely 

 punctate, intercoxal process rounded, sternum convex, with fine, 

 distant punctures, the episterna coarsely punctate; basal joint of 

 front tarsi of male very wide, of hind tarsi long (not quite as long 

 as the rest combined). Dimensions, ^, 13 x 3 -6 mm.; 5, 15 x 4 mm. 



Hah. Acacia Creek, MacPherson Range, New South Wales. 



Ten specimens, taken liy tlie author and Mr. T. G. Sloane, in 

 Januar}', 1911 The species belongs to the 0. Jackson'i and 0. 

 striatus group, which are difierentiated from 0. Behri Germ., by 

 their flatter and non cylindric form, the pronotum truncate at 

 apex and truncate or coarctate at base, the evident punctures on 

 the head and pronotum, and their longer hind tarsi. 0. acaden- 

 sis is separated from 0. Jacksoni, and 0. striatus mihi, by its 

 nitid colour, the different number of elytral striae, and the much 

 coarser punctuation of head and pronotum. The five described 

 species of Otrintus may be tabulated as follows. 



Table of Otrintus. 



A. Form, subcylindric, base of pronotum not ctjarctate, head 

 and pronotum smooth (jr only microscopically punctate. 



1. Colour black, elytral intervals flat, tibiae normal Beh7i (ianu. 



2 Colour black, elytral intervals convex, tibiae of (J with strong sexual 

 characters Fei'yusoiii, ti.sp. 



S.Colour bronze, elytral intervals convex cylindricuH, n.sp. 



