144 
Psyche 
[December 
characteristic within the genus, at least with his Malay- 
sian and New Guinea specimens, and not necessarily an 
adaptation to a terrestrial environment. The short, strong 
legs, with well-developed tarsal claws, which are similar 
to a burrowing condition, would be useful for locomotion 
in the absence of the usual support of the aquatic medium. 
Fraser also has suggested (in litt.) that the ocelli are 
unusually large for such a young form; this also may 
be due to its unusual environment. Comparative study 
of the nymphs and adults of the New Caledonian Argiolestes 
will be necessary before the evolution of terrestrial modi- 
fications of this nymph can be understood. 
I am indebted to Dr. F. C. Fraser and Dr. M. A. Lieftinck 
for their letters with suggestions on the taxonomic posi- 
tion and habit of this unusual nymph. I also wish to thank 
Dr. E. 0. Wilson for his notes on its habitat. 
