34 



CURCULIONIDiE. 



one at the shoulder, one near the apex o£ interval 5 and a trans- 

 verse row behind middle of from 2 to 6 more or less contiguous 

 spots which are ver_y variable in size and shape, and sometimes 

 entirely absent. 



Head coarsely punctured and with three very deep sulci on 

 the forehead. Rostrum separated from the head by a deep trans- 

 vei'se sulcus which extends to the eyes, parallel-sided, rugosely 

 punctured, very broadly and deeply impressed in the middle and 

 with a narrow shiny central carina. Antennce with the basal 

 joint of the f iinicle slightly longer than the second. Prothorax 

 a little broader than long, apex and base truncate and of about 

 equal width, sides rounded, broadest well before middle ; upper 

 surface convex, closely and evenly set with shiny black granules, 

 without any central carina, but with a short transverse impressed 

 line on each side about middle. Elytra ovate, the basal margin 

 faintly sinuate and broader than the base of the prothorax, with 



Fig. 11.— Blust/rus oniscus, Oliv. 



the external angles acutely projecting, shoulders obliquely rounded, 

 but sometimes (especially in 5 ) witli a small humeral tubercle, 

 sides rounded, broadest about middle ; upper sui'face convex, 

 with regular sulci containing large ill-detined punctures, the 

 intervals narrow, evenly raised and rugosely granulate, interval 4 

 with two small tubei'cles in the apical half, the posterior one 

 covered with white scales. 



Both sexes have a deep central impression on the apical 

 ventral segment, but that of the c? is deeper and broader than 

 that of the $ . The anterior tubercle on interval 4 is almost 

 always obsolete in the S • 



Length, 1-^k mm.; breadth, 4-5| mm. 



BE:jfGAL : Calcutta. Assam : Sylhet, Khasi Hills ; Silonibari 

 {H. Stevens). Burma : Pegu (E. T. Atkinson) ; Momeit (Doherty) ; 

 Palon (L. Fea); Tharrawaddy and Taung-ngu {G. Q. Gorhett). 



Ttjpe not traced ; of B. olivieri in the Genoa Museum. 



A very variable species ; in a few examples all the white spots 



