360 
Regeneration in Argas persicus 
The results are presented in tabular form. 
Date when Number 
ticks dropped of Extent of 
off fowl ticks amputation 
10. IV. 13 
1 Legs 2 and 3 of 
left side 
1 3 right legs 
Date of 
moult to first 
stage nymph 
17. iv. 13 
5 » 
11. iv. 13 3 
All 6 legs, with 
exception of 3 
articles on left 
hind leg 
3 right legs 
7 3 right legs 18. iv. 13 
1 Legs 2 and 3 of 19. iv. 13 
right side 
2 Leg 3 of right 18. iv. 13 
side 
Extent of regeneration 
No regeneration. 
First right leg, half-size and imper¬ 
fect; legs 2 and 3 absent. 
Eight side, 3 perfect legs; left side, 
leg 1, four-jointed stump; legs 2 
and 3 absent. 
Perfectly formed limbs, but only 
three-quarters normal size. 
In five, limbs as above; in one, leg 1 
three-quarter size, leg 2 half-size, 
leg 3 a three-jointed stump, with a 
small terminal hook (Fig. 1, B ); in 
the other, leg 1 half-size, legs 2 and 
3 absent. 
Legs 1, 2 and 3 all half to two-thirds 
normal size. (Fig. 1, A.) 
Leg absent—no regeneration. 
Fig. 1. Argas persicus, first stage nymph: (A) tick from Experiment 6, showing almost 
perfect regeneration of the first three right legs; (B) first three right legs of another 
individual from the same experiment, showing imperfect regeneration. ( x 13.) 
