16 
Regeneration in Ticks 
2 . Amblyomma hebraeum. 
(a) Operations on the larva and their effects on the nymph. 
Thirteen larvae were operated upon on 27. vii. 1915, after they had fed 
to repletion upon a hedgehog and dropped off the'host. 
Nature of operation on larva 
A mblyom 
via larva 
Hypostome 
""N 
Chelicerae 
Regeneration observed in nymph 
No. 
Palps 
cut away 
digits 
1 
R and L — 
at base 
L cut 4 l 
perfect 
2 
R and L — 
at base 
R and L cut 3 l 
perfect 
3 
R and L — 
at base 
R and L cut 3 l 
perfect 
4 
R and L — 
1/2 
R cut 2 l 
L cut \ l 
perfect 
5 
R and L — 
at base 
R cut 3 l 
R chelicera shaft 1/4 shorter 
than normal, otherwise perfect 
6 
R cut at base 
L cut near base 
1/2 
R cut 4 l 
L cut 2 l 
perfect 
7 
R cut at base 
L — 
3/4 
R and L cut 2 l 
perfect 
8 
R and L — 
3/4 
R cut 1 l 
L cut 2 l 
perfect 
9 
R — 
L cut \ 
at base 
R cut 2 / 
L cut 2 l 
perfect 
10 
R — 
L at base 
at base 
R cut 2 l 
L — 
perfect 
(i b ) Operations on the nymph and their effects on the adult. 
Ten nymphs were operated upon on 3. viii. 1915, after feeding to repletion 
on a hedgehog. 
Nature of operation on nymph 
Avibhjovima 
nymph 
No. 
Palp articles 
cut away 
Hypostome 
cut across 
Chelicerae length 
of shaft cut in terms 
of digit length 
Regeneration 
observed in 
adult S or ? 
1 
R and L — 
at base 
R and L cut 4 l 
perfect 
2 
R and L — 
at base 
R cut 2 l 
L cut 3 l 
3 perfect 
3 
R and L cut 2-4 
under base 
R and L cut 2 l 
$ perfect 
4 
R — 
L cut 2-4 
at base 
R and L cut 1 l 
$ perfect 
5 
R and L 2-4 
at base 
R cut 1 l 
L cut 3 l 
$ perfect 
G 
R cut 3-4 
at base 
R — 
$ j)erfect 
L cut 2-4 
L cut 2 l 
7 
R cut 2-4 
L cut 1-4 
at base 
R and L cut 2 l 
cJ perfect 
