294 MR. NEWPORT ON THE REPRODUCTION OF LOST PARTS. 
Fig - . 5. Front view of a pupa of Vanessa urticce one hour before the development of 
the perfect insect (fig-. 6.), exhibiting the condition of the first and second 
reproduced legs in the pupa. 
a. The antennae. 
b. The palpi. 
c. The elongated maxillae or proboscis. 
d. The front. 
e. The eyes. 
f. The anterior, or palpiform leg of the insect reproduced, and very much 
the smallest on the left side. 
g. The middle, or meso-thoracic leg, reproduced and diminutive on the left 
side. 
i. A deep excavation on the left side of the pupa which the reproduced 
limbs are too minute to fill up. This specimen is magnified three 
diameters. 
Fig. 6. The under surface of the perfect insect developed from the pupa, fig. 5. 
(natural size), the letters as before. The reproduced legs 1 and 2 are not 
more than one-half the size of the corresponding ones on the opposite side. 
In 2, four of the tarsal joints exist, but are exceedingly minute. 
Fig. 7- The meso-thoracic or middle pair of legs in the same insect magnified three 
diameters. 
Fig. 8. Reproduced meso-thoracic leg of another individual a little more complete. 
Fig. 9. Reproduced meso-thoracic leg of a third individual, with the whole of the 
tarsal joints, and nearly perfect, but without the tibial articular spines (g). 
Fig. 10. Meso-thoracic leg of a fourth individual still more complete, with the claw 
(f) almost as in the normal state. In this instance the leg of the larva was 
divided in the tibial joint (c), and the reproduction commenced in that 
part, but even in this instance the articular spines (g) are absent. 
Fig. 1 1. Leg divided in the tibial joint, in the Jifth stage of the larva, and reproduc- 
tion commenced in that part. 
Fig. 12. Leg divided in the fifth stage of larva with the claw formed at the extremity 
of a mesotarsal joint. 
Fig. 13. Leg reproduced in the tibial portion, further advanced. 
Fig. 14. Abortive attempt at reproduction of the leg in a specimen in which the 
limb was removed after the larva had entered its fifth stage. 
Fig. 15. Abortive attempt at reproduction of the posterior or meta- thoracic leg in a 
specimen in which the limb was removed while the larva was in its fourth 
stage , and in which an entire new limb (fig. 9.) was formed in the same 
insect. 
Fig. 16. Rudimentary abortive leg in a specimen operated on its fourth stage as a 
larva. 
All the figures from 7 to 16 are magnified three diameters. 
