1892.] of the CoUoptera of South Africa. 23 



Gen. BOSTRICOPHORUS. Thorns. 



Anual. Soc. Ent. d. France, 1856, p. 881. 



Mentum with the median tooth long and acute ; palpi slender, 

 mandibles with three strong, inner teeth, labrum very convex, pro- 

 duced in front, and with five teeth at the apex, antennae with the 

 four basal joints filiform, the 5th, 6th, and 7th sub-foliated, the 

 apical four compressed ; male with a little fascicle of hairs under the 

 fourth joint, this fascicle rudimentary in the female ; prothorax with 

 the outer sides perpendicular and acutely carinated ; elytra parallel, 

 the sutural part spinose at the apex, not much convex oa the upper 

 part ; legs long, slender. 



SYNOPSIS OF SPECIES. 



Antenna with the 5th, 6th, and 7th joint sub-foliated, elytra 

 with three or four yellow spots on each side. Bianconi, 



Antennae with ihe 5th, 6th, and 7th joiut very much com- 

 pressed ; elytra A^vith six or seven yellow spots on each side. notatus. 



Antennse with the 5th, 6th, and 7th joint sub-foliated ; elytra 

 with two yellow fascise and a few lines. compressioorMs, 



B. BiANCONi. Bertol. 



Dissert. Ins. CoL, 1858, p. 7, pi. 1, fig. 1. 

 PI. 11, fig. 5. 



Very dark bronze, the basal joints of the antennae, legs and under- 

 side dark-blue, very shining ; palpi pale-yellow, the apical joints dark- 

 blue ; labrum yellowish-white, narrowly edged with black, and having 

 four setigerous punctures, one on each side, the other above the second 

 tooth ; head finely strigose ; prothorax cylindrical, slightly impressed 

 in front and behind, and grooved in the centre ; elytra parallel, very 

 little convex, the spines on each side of the suture very conspicuous, 

 black, opaque, with the outer margins violaceous, closely punctured 

 and with three or four yellow spots on each elytron ; two, comma- 

 shaped at the base, close to the suture, one at about the median part of 

 the elytra, with a smaller one alongside of it, which is, however, often 



