BY ARTHUR M. LEA, F.E.S. 



359 



The female is scarcely distinguishable from the female 

 of rudis, and it differs from its male as does the female 

 X)i that species. 



LISSOTES CORXUTUS, Boileau. (Figs. 47, 48.) 



]\Iale, Black, feebly shining; sides setose, the elytra less 

 conspicuously than usual, but in addition nearly every 

 puncture has a short stout seta. 



Head very wide, sides behind and in front of eyes 

 feebly or not at all projecting, near each side and close 

 behind the mandible a slight swelling (scarcely a 

 tubercle), with a conspicuous medio-frontal subconical 

 tubercle; towards sides with large, round, dense punc- 

 tures, becoming smaller and sparser elsewhere; a narrow 

 apical space highly polished and impunctate. Labrum 

 acutely produced in middle. Alandibles strongly curved 

 and rather thin, each strongly and obtusely produced 

 close to labrum, upper surface obtusely tuberculate at 

 middle of base (sometimes very feebly so), and close to 

 apex with a strong projection directed upwards, or up- 

 wards and backwards: lower surface usually with a mode- 

 rately strong cusp close to apex, and one or two very 

 feeble ones behind same. Prothorax distinctly wider than 

 head, sides finely serrated and scarcely rounded, near 

 base somxcwhat oblique, with the hind angles widely 

 rounded, apex gently rounded in middle, flattened along 

 middle; with dense, rather coarse, and somewhat irregu- 

 larly distributed punctures, but apical half with an im- 

 punctate or almost impunctate space along each side of 

 middle, and conjoined in front. Elytra with shoulders 

 scarcely at all projecting; with very dense but irregularly 

 distributed punctures of moderate size, quite absent from 

 the suture, which is highly polished; striation and inter- 

 stices very ill-defined. Length, 14 — 18 (female 12 — 16) 

 mm. 



Female differs from the male in having the head 

 much smaller, with denser punctures of more even size 

 and distribution, the medio-frontal tubercle rather less, 

 and the sublateral swellings rather more, conspicuous; 

 mandibles of the usual female type, prothorax no wider 

 than the elytra, its sides more rounded and with stronger 

 serrations, smooth spaces much less defined, and elytra 

 rather more coarsely and evenly punctured. 



