EXPLANATION OF PLATE XVIIL 



Fig. 7. — Diagrammatic section of burrow of Damarchus excavatus. 

 ,, 8. ,, ,, „ ,, ,, NemesieUus sp. 



,, g. ,, ,, ,, ,, ,, Acanthod'i'n harku- 



densis. 



10. ,, ., ,, ,, ,, Sason sp. from Cey- 



lon. 



11. ,, ,,, ,, ,, ,, Diplothele wahJii. 



12. ,, ^ ,, ,, ,, Sasonichus arthrapo- 



fhysis. 



1 It is possible that the lower end of the burrow may be less simple than is 

 indicated in this figfure. See above, p. 402. 



