680 Mr. J. O. Wzsrwoop on the Pausside, 
Fig. 4. The same, seen from below, exhibiting the structure of 
the lower parts of the mouth. 
5. 'The labrum, mandibles, and lower part of the face, more 
highly magnified. 
6. The mandible, ditto. 
7. The maxilla and its palpus. 
8. The mentum, labium, palpi, and their scapes, seen from 
below. 
9. 'The same, seen from within the mouth. 
10. 'The same, seen sideways. 
11. The under-side of the trunk (thorax Linn.) 
12. The head and prothorax, seen sideways. 
13. The coxa (r), the biarticulate trochanter (s & s), and the 
femur of the hind leg. 
14. The tarsus. 
15.to 20. Details of a species of the genus Paussus of the 2nd 
section. ; 
15. Under-side of the head. 
16. The labrum. 
17. The mandible. 
18. The maxilla, showing its insertion on the outside of the 
produced lobe of the mentum. 
19. The instrumenta labialia mihi, or lower organs of the 
mouth, seen from beneath: half of the mentum and 
neck is removed, to show the insertion of the labial 
palpi. 
20. The lower organs of the mouth, seen from within, with 
one of the lobes of the mentum. 
21. Head, thorax and base of the elytra of Paussus micro- 
cephalus. 
22. Paussus Linnei. 
23. Antenna of ditto, seen from the front. 
Fig. 24. 
