Monandroptera inuncans and Rhaphiderus scabrosus. A475 
on the leaves of the guava (Pstdium) and the cassowary-tree 
(Casuarina), as well as on the foliage of Agauria pyrifolia*. 
Ai{ter having produced in the case of a few specimens 
amputation by autotomy, I have succeeded in observing the 
regeneration of the amputated limbs. A regenerated ap- 
pendage is always distinguished from the corresponding limb 
of the same pair by its smaller dimensions and a slightly 
different coloration. 
_ The difference in dimensions cleariy attains its maximum 
when the victims of amputation are nymphs having to undergo 
but few moults before reaching the fully developed state. A 
very interesting point is that in a regenerated limb the tarsus 
always + has only four joints instead of five. 
This fact undoubtedly affords the explanation of the 
following mistake on the part of Westwood :— 
The entomologist in question, having been placed in 
possession of a specimen of Monandroptera (Diapherodes) 
undulata, wrote in the description that he gave of it :—‘ This 
fine insect is remarkable for having only four joints in the 
anterior tarsi, differing in this respect from all the known 
species of the family to which it belongs” (‘ Arcana Ento- 
mologica,’ vol. i. p. 26). It is evident that Westwood was 
dealing with a specimen which, when a nymph, had lost by 
autotomy its two front limbs. 
This is further proved by the following words :—“ The 
anterior limbs are also relatively much shorter than the 
Test.” 
Neither did Ch. Coquerel, who had nevertheless studied 
the Phasmide of Bourbon, in this very island even, recognize 
the true cause of this curious fact. Criticizing the opinion of 
Westwood, he wrote :—‘ It was probably a case of structural 
imperfection peculiar to this individual, or perhaps Westwood 
had to deal with an insect which had been damaged and 
mended by an incompetent hand” (Ann. Soc. Entom. de 
France, 1861, p. 495). 
In a subsequent paper I propose to study the process of 
regeneration of the limbs in the nymphs of Phasmidze, as well 
as a number of anatcmical peculiarities in these Orthoptera. 
* Agauria pyrifolia is a shrub belonging to the family Ericacee. Its 
highly peisonous leaves have often been the cause of cases of poisoning 
among cattle. They do not produce any effect, however, upon the 
Phasmids under discussion, which eat them with avidity. 
+ {The word in the original is “‘ souvent ” (frequently) ; im the separate 
impression before me, however, the author hes altered this into “ toujours ” 
(always).—TRANSL, | 
Qe 
(3h) 
