362 
Regeneration in Argas persicus 
which, in A. persicus, differs considerably from the nymphal claw, owing 
to the presence of a large pulvillus. In no case could we detect any 
sign of a larval pulvillus on the regenerated claws. 
( b) First distal article of second right leg amputated 3. IV. 13. 
16. 
IV. 
13 
1 moulted 
Distal article slightly shorter, but same 
remainder of leg. 
17. 
IV. 
13 
1 „ 
Ditto. 
18. 
IV. 
13 
1 „ 
Ditto. 
20. 
IV. 
13 
1 „ 
Ditto. 
25. 
IV. 
13 
1 
Two distal articles shorter than normal. 
29. 
IV. 
13 
1 
Regeneration almost complete. 
As might be expected, no marked differences could be detected 
between the amputated and the normal legs. In most cases the 
regenerated tarsus was slightly shorter, but approximately of the same 
thickness as the corresponding one of the opposite side, and the claws 
seemed to be normal (Fig. 2, B). In one case, however, the penultimate 
was also shortened. 
(c) Two distal articles of second right leg amputated 3. IV. 13. 
16. iv. 13 
19. iv. 13 
21. iv. 13 
25. iv. 13 
2 moulted Regenerated leg normally jointed, but four distal articles 
three-quarter size. 
1 ,, Ditto. 
1 ,, Ditto. 
1 ,, Ditto. 
The nature and extent of the regeneration were approximately the 
same in all these cases and will be understood on reference to Fig. 2 ( G). 
It will be noticed that the reduction in size certainly includes 
articles 4 and 5 and possibly article 3, although only two articles 
(6 and 7) had been removed. 
( d ) Three distal articles of second right leg amputated 3. IV. 13. 
14. IV. 13 
15. iv. 13 
19. iv. 13 
20. iv. 13 
27. iv. 13 
1 moulted 
9 
> > 
> j 
j > 
i 
i 
i 
Regenerated leg less than half-size and all six distal 
articles miniature. 
! Nature of regeneration as above, but size varying from 
half to two-thirds that of normal leg. 
As above, but leg quite three-quarters normal size. 
As in (c), reduction took place in articles other than those which had 
been removed, for although only three distal articles had been amputated, 
all the articles were distinctly miniature. As might be expected, the 
longer the interval between amputation and moulting, the greater was 
the extent of regeneration. 
