124 MR. G. A. K. MARSHALL ON COLEOPTERA [Jan. 19, 



shallower ; the prothorax is distinctly bi^oader ; the sulci on the 

 elytra are shallower, and the punctures in them smaller and quite 

 hidden by the scaling ; the granules on the intervals are smaller 

 and more closely set. 



A common species at Salisbury, where it feeds on several low 

 herbaceous plants, but especially on a species of Pse^idarthria. 



120. H. BiMAcuLATUs Mshl. (Plate IV. fig. 6.) 



H. himacidatus Mshl. I.e. p. 456 (1902). 



Long. 10|-12, lat. ^-^ mm. 



Head convex, closely and distinctly punctured and with thin 

 yellowish scaling, forehead with a small bare smooth spot near 

 base of rostrum ; anteocular furrows absent. Rostrum not incised 

 at base, as long as prothorax only, scarcely curved and slightly 

 dilated towards apex. Upper sui'face convex, with a fine smooth 

 central carina and two, much less distinct, on either side ; lateral 

 sulci broad and shallow, uniting at base, where the central pai-t of 

 the rostrum is slightly raised so as to form a I'udimentary basal 

 tubercle; scrobes shallow, lateral and oblique; inferior basal 

 furi-ow absent. Antennce rather longer in the S ; scape reaching 

 the posterior margin of eye ; the two basal joints of funicle sub- 

 equal. Prothorax in the S a little broader than long, the length 

 being equal to the width of both base and apex ; in the $ dis- 

 tinctly transverse, the length being shorter than the width of 

 base or apex ; sides strongly rounded, broadest about middle, 

 dorsal anterior margin sinuate ; ocular lobes almost obsolete. 

 Upper surface convex, closely set with low granular tubercles, 

 bearing depressed pale setae and leaving a very narrow central 

 furrow without any carina ; scaling brown, with three narrow 

 pale lines. Elytra ovate and acuminate posteiiorly in $ , narrower 

 and subelliptical in 6 , shoulders sloping, sides rounded, broadest 

 rather before middle, apical processes absent. Upper surface 

 convex, with shallow strise containing regvilar rows of small 

 punctures ; intervals all equally raised, each bearing a single row 

 of shiny setigerous granules, which are largest near base and 

 rapidly diminish in size towards apex ; scaling dense, variegated 

 brown and grey, with a small but couvspicuous white spot at the 

 declivity on the third interval. Legs with fine grey pubescence ; 

 intermediate tibiae curved internally just before apex, but much 

 more markedly so in the c? ; this sex also has the posterior tibia? 

 very strongly compressed laterally just before apex ; posterior 

 tarsi with the 2nd joint a trifle narrower than the others, 2nd 

 and 3rd subequal, 1st joint very long and broad in d , longer than 

 2nd and 3rd together, but normal in $ . 

 Mashonaland : Salisbury. 

 Type in the British Museum. 



The sti'ong compression of the posterior tibiae of the male is a 

 character which, so far as I am aware, does not occur elsewhere 

 in the genus ; the striking difference in the posterior tarsi of the 

 two sexes is also very unusual. 



