1416 COLEOPTERA 



hody rather short, deflexed, its pubescence inconspicuous. Legs of 

 moderate length, the posterior tibi« a httle bent, and arcuate near 

 the extremity. 



AntenncB 10-articulate, the two terminal sculptured, and bearing 

 short but very evident yellow hairs ; basal joint stout, longer than 

 the second ; joints 3-6 gradually yet only slightly thickened, the 

 fifth slightly broader than the others, but not aj^preciably longer ; 

 seventh and eighth transverse, the eighth very short ; ninth very 

 large, its base truncate, the outside gradually dilated so that its ex- 

 tremity forms an obtuse angle, the apex oblique, twice as wide as 

 the base, on the inner and lower surface there is a hook-like append- 

 age ; tenth about twice as long as it is broad, its inner face in line 

 with that of the ninth, on the outside towards the base it is sorae- 

 wdiat narrow^ed, so that an elongate gap exists at that side between 

 the two last joints. 



Prosteruum incurved and somewhat concave in hont ; the meta- 

 sternum broadly depressed along the middle ; the basal segment with 

 two obtuse distinct tubercles behind, the apical segment impressed 

 or flattened, the intermediate ones short ; the front cox(f. with small 

 spines. 



S . Length, nearly f ; breadth, quite ^ line. 



Hunua Kange, Maketu. Ten males. 



Obs. — Female. Antenna with the fifth joint rather larger than 

 the contiguous ones, but little longer than broad ; ninth twice the 

 bulk of the eighth ; tenth nearly twice as large as the ninth ; eleventh 

 largest ; the three terminal joints more obviously pubescent than 

 the preceding ones. I believe this form to be the female, but I am 

 not quite sure. 



2465. B. COStata, "-s- Nltid, piceo-rufous, elytra red, legs 

 paler, tarsi and palpi yellow, the surface nearly nude. 



Head nearly plane in front, with tw^o small interocular foveas. 

 TJiorax widest near the middle, its sides flattened behind. Elytra 

 longer than broad, a little narrowed towards the shoulders, with 

 distinct sutural stride. Hind-body wdth fine greyish hairs. 



Male. Antenna ten-jointed, basal joint rather longer and thicker 

 than the second ; third and fourth equal, small, moniliform ; fifth 

 and sixth distinctly larger ; seventh quite transverse ; eighth still 

 more so, very short ; ninth twice as broad as it is long, its base 

 curved towards its acute outer extremity (apex), the front slightly 

 incurved ; tenth also large, its point of articulation, near one side, 

 consists of a slender stalk ; these two enlarged joints are sculptured 

 and hairy, they extend laterally, and can be nearly closed together 

 like shears. 



Prosternuni deeply emarginate. Anterior coxa with spines. 

 Metasternum moderately broadly depressed. Abdomen, basal seg- 

 ment, with two obvious costae extending from the base to the apex, 

 convergent in front, these represent the usual tubercles ; the 

 last segment flattened, and with a small depression, the others 

 short. 



