PARACOROTOCA aki<;rmani (wakren). 311 



about 120 somewhat large facettes. Gena3 convex, swollen,, 

 and extending round the back of the head, where they are- 

 separated from the labium by a thickened edge. Posterior 

 foramen large, rounded (fig. 7). 



Head -appendages: Antenna. — When stretched back- 

 wards the antenna3 reach to about the middle of themetathorax. 

 11 -jointed. The 1st or proximal joint about Ik times the 

 leu.gth of the second, connected with antennal pit by inflated 

 membrane, less setose than the more distal joiuts ; joints 2-10 

 slightly tapering proximally, truncated distally, jointed to 

 one another by narrow connections, richly setose; 11th or 

 terminal joint fusiform, nearly double the length of preced- 

 ing joint, provided with a ring of olfactory pits in the middle 

 plane (PI. XVII, fig. 20, o. ^;.). In some details this antenna 

 is strikingly similar to that of Termitomimus. 



Mandible. — Large, curved and pointed, without teeth or 

 serration of any kind (PL XVII, fig. 21) ; the mandibles 

 complete the lower contour of the head. Provided with very 

 powerful muscles. Practically all physogastric Aleocharines 

 have similar mandibles. At the base of the mandible and 

 between it and the 1st maxilla there appears to be an aperture 

 which would seem to be the only outlet for a gland lying close 

 to the articulation of the mandible (PI. XVI, figs. 5, 6, d. m.). 



First Maxilla. — Cardo ring-like and narrow; stipes 

 membranous towards the base ; distally it carries a short, 

 comb-like lacinia terminating in a curved, horizontally placed,, 

 finely pointed chitiuous spur; galea membraneous and curved, 

 bearing a row of small reflexed setee. The palpiger is setose, 

 it is of great size and has the stipes attached to it on the 

 inner surface. The palp is 2-jointed, although usually in 

 these beetles it is 4-jointed (PL XVII, fig. 22). From com- 

 parison with other genera, as, for example, Asticta, it would 

 appear that the 2-jointed condition arises through (1) the 

 loss of the distal joint and (2) the proximal joint remaining 

 incorporated with the palpiger. The second joint of the 

 palp is curved and terminal, tapering to a blunt point. It 

 bears on its anterior surface a large oval olfactory pit (fig. 23), 



