328 



lightly excavated in the middle-line above. Antennae short and thick, 

 apical segment clavate and rounded. 



Nuchal-plate with its surface not flat but lightly undulating, thickly 

 punctured and hairy; not furnished in front of the lower border with 

 either a transverse ridge or a sulcus. 



2 nd dorsal plate thickly and deeply punctured and hairy, anterior 

 margin low but nearly vertical, laterally furnished with a few ill-de- 

 fined oblique smooth keels, not marked by a ridge or sulcus in front; 

 the lamina very narrow in front, represented merely by the straight 

 edge of the plate, becoming gradually wider below and behind, its 

 margin evenly thickened throughout. 



The rest of the tergites furnished in front with numerous rounded 

 granules or small tubercles, and behind with deep punctures. 



Anal tergite convex from side to side, lightly saddle-shaped from 

 above downwards, its inferior portion turned inwards; without mar- 

 ginal notch and without inner ridge. 



Legs hairy, tarsal segments not distally attenuated, furnished with 

 a single spine above the claw and several spines beneath. 



In the first and second pairs of legs the terminal claw is of enormous 

 size, being as long as the tarsal segment and as thick as it at its 

 proximal end; no spines above or below it. 



The tooth of the mandible also enormously enlarged and elongate, 

 obviously corresponding with the enlarged claws of the anterior two 

 pairs of legs. 



Copulatory feet — 1 st pair with movable dactylus long, stout, com- 

 posed of two segments whereof the proximal is very much the larg- 

 est and bears at its distal end a tooth-like prominence; immovable 

 slender when seen from the side, very short, considerably shorter 

 than the proximal segment of the movable dactylus; 2 nd pair with 

 movable dactylus composed of two segments, whereof the distal is 

 very small but of the same width as the distal end of the proximal 

 segment, which is thicker at the base; immovable dactylus about as 

 long as the movable, gently curved, becoming gradually more slender 

 from base to apex, neither spatulate nor blade like. 



Length 15 mm., width 7.5 mm. 



This species is of very great interest. The form of the copulatory 

 feet and of the tarsal segments of the legs shows that it is related to 



