Fig. 7. 
Fig. 8. 
Bigs 2). 
Fig. 10. 
Bigs 11. 
Rig. 12. 
Fig. 13. 
Fig. 14. 
249 
in the former figure, seen from below and from 
the inside (182/,); the signification of the letters - 
as in fig. 3. 
The movable finger of the mandible exhibited 
in fig. 5, seen from below and from the inside (432/,), 
Right mandible of Obisium muscorum Leach, seen 
from above (28/4). 
The Ist joint of the mandible exhibited in the 
former fig., seen from below and slightly from the 
inside (81/1); b. lamina interior, f. »flagellum«, 1. 
lyriform fissure. 
The 2d joint of the mandible exhibited in fig. 8, 
seen from below and slightly from the inside (83/4). 
Apex of the movable finger of Obisium muscorum 
treated with caustic potash and seen from below 
(see the text p. 219—20). 
The ist joint of the right mandible of Chthonius 
Rayt L. Koch, seen from below and from the 
inside (63/1); the signification of the letters as in 
fig. 9. 
The 2d joint of the right mandible of Chthon. Rayt, 
seen from below and from the inside (63/,). 
The largest portion of the immovable finger of the 
large chela in the male of Chernes cimicoides J. 
C. Fabr., seen from the inside (129/,;); a. the teeth 
placed in a close row, b. the teeth placed inside 
the margin, 0. particular, spread sense-organs, t. 
tactile hair, drawn in full, t’. tactile hair, of which 
only the basal portion is drawn. 
