60 Annals of the South African Museum. 



insect is dull, more so than in pumicosa, which is due to the spaces 

 between the large punctures being also closely punctured, or almost 

 striated in parts ; . . . the pubescence is longer and more recum- 

 bent than in strigulosa ; the last two abdominal segments are not 

 striated. The mandibles are finely striated and punctured. 

 Delagoa Bay." 



P. cavernosa, Eoger. 

 Berlin Ent. Zeitschr., vol. 4, p. 288, £ , 1860. 

 " £ . 13 mm. Brownish black ; antennae, mandibles, and legs 

 red, slightly shining, covered with very short reddish-yellow pubes- 

 cence. The whole body is densely punctate with coarse and 

 somewhat confluent punctures. The punctures of the 2nd abdominal 

 segment are sparser, shallower, and smaller, giving this segment a 

 rather smooth appearance. The head is wider than the thorax, 

 quadrangular, rounded in front and behind, and also very feebly emar- 

 ginate behind. The eyes are situated in front of the middle of the 

 sides of the head. The frontal carinae are thick, lobate, horizontal, 

 and divided by a deep central line. The 12-jointed antennae are 

 inserted in a deep depression at some distance from the anterior 

 margin of the head, as well as from each other ; the scape is sparsely 

 clothed with erect hairs and reaches back as far as the occiput ; the 

 2nd and 3rd joints of the flagellum of equal length, and a little 

 longer than the 1st ; the apical joint as long as the two preceding 

 together. Clypeus arched in the middle, feebly carinate and slightly 

 impressed transversely along the anterior margin. The mandibles are 

 triangular, not much elongated, finely and longitudinally striate or 

 rugulose, more coarsely on the inner margin, which has 6 to 7 blunt 

 teeth. The prothorax is wider than the rest of the thorax, rounded 

 at the sides, narrow and lower in front and separated from the 

 mesothorax by a depressed line ; the rest of the thorax without 

 sutures, compressed laterally and feebly convex towards the base, 

 the declivity of the epinotum abruptly truncate. The sides of the 

 thorax not rugose. The node of the petiole is as wide as the 

 epinotum but narrower than the 1st abdominal segment, higher than 

 long, perpendicular behind, rounded in front and strongly so above ; 

 ventral lamella with a small tooth. The 1st abdominal segment is 

 perpendicular in front, rounded above, wider than long, rounded at 

 the sides and constricted behind. The 2nd abdominal segment is 

 wider than long, with a fine median longitudinal line. All the tibiae 

 with pectinate calcaria. The tibiae, metatarsi and tarsi almost of 

 equal length. The front legs have the metatarsi shorter than the 



