754 NEW SPECIES OF AUSTRALIAN COLEOPTERA, 



gently increasing from shoulders to about the basal third, and 

 then more noticeably dilated. Length, 4 mm. 



Hab. — Tasmania: Mole Creek, Mount Wellington (A. M. 

 Lea). 



The black colour, together with the conspicuous latero-basal 

 impressions of the prothorax, render this species very distinct. 

 The greatest width of the elytra is at the apical fourth, where 

 the width is about thrice that of the prothorax; the punctures 

 on the head and elytra are dense and small, but sharply de- 

 fined, on the prothorax they are denser and subgranulate in ap- 

 pearance. 



Orchesia eucalypti, n . sp . 



Black or blackish brown, elytra with flavous zigzag mark- 

 ings, antennae and legs, and usually most of the under surface, 

 of a dingy castaneous. Clothed with extremely short pub- 

 escence. 



Head almost concealed from above, with small, dense punc- 

 tures. Antennae thin, four apical joints slightly thickened. 

 Prothorax about once and one-half as wide as the median length, 

 sides strongly rounded and much wider at base than at apex, 

 with a shallow depression towards each side near base; with 

 small dense punctures; marginal carina on each side short and 

 basal. Elytra at base the width of prothorax, sides feebly 

 dilated to near the middle, and then rather more strongly dim- 

 inishing in width to apex; punctures much as on pronotum. 

 Under surface strongly ridged along middle. Hind spurs 

 slightly longer than their supporting tibiae, and almost as long 

 as the following joint. Length, 2J-3| mm. 



Hob.- — Tasmania : Summit of Mount Wellington, numerous 

 specimens beaten from Eucalyptus cocciferus trees (A. M. Lea). 



Structurally fairly close to 0. austrina, but narrower at both 

 ends, and elytra with conspicuous markings. The under sur- 

 face is sometimes entirely blackish, and on such specimens parts 

 of the legs are usually deeply infuscated. The elytral mark- 

 ings vary somewhat in extent and completeness, but not in dis- 

 position, and consist of an antemedian zigzag fascia and a post- 

 median one; the first (when complete) commences on each side 

 at the basal third, and crosses the suture also at the basal third; 

 the second (on many specimens appearing as three disconnected 

 spots obliquely placed on each elytron) commences on each 



