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a different kind, an insectivore with a long nose and long 
hind-legs, which roams about the rocks and does not seem 
to have a definite abode except when it has a litter of young. 
The two species or subspecies which occur in Algeria are only 
found on the High Plateaux, and the adjacent district of the 
desert, not extending into the Tell except at Oran. It is an 
Ethiopian genus found in the Nile country and tropical 
Africa, as well as Morocco. It is most interesting to observe 
that the Siphonaptera collected on the High Plateaux, apart 
from some Palaearctic genera extending far into the desert 
with their hosts, are mostly identical with or closely allied 
to Egyptian and Sudanese species, as is also the case with 
the Siphonaptera collected in the desert. The genus prevalent 
in these districts is Xenopsylla, to which belong the rat-fleas 
transmitting bubonic plague; it is an essentially Ethiopian 
genus which is not found in the Tell of Constantine and Alger 
except on rats in port towns. The Elephant shrew does not 
seem to have a flea. We have collected many specimens of 
the mammal and never found a parasite on it. Among the 
butterflies of the High Plateaux the Pierines and Satyrines 
are the prevalent groups, which at times occur in many 
species and large numbers of individuals. Satyrus abdelkader 
is the most conspicuous of them, and restricted to the Plateaux 
and some localities in Northern Oran. Several species of 
Thestor are found besides the Mediterranean Th. ballus, and 
Cigaritis is represented by three species. Even more interest- 
ing than the butterflies are the moths, which show a strong 
admixture of Syrian affinity. In the spring the caterpillars 
of Lemonia, Lambessa and other Lasiocampids abound, and 
the lamp attracts many species of Noctuids rare in collections : 
Cleophana, Cucullia, Calophasia, Eublemma, ete., all genera 
essentially Palaearctic. The Aurés Mountains with their 
extensive woods are not so different in the Lepidoptera from 
the rest of the central faunistic zone as one should expect. 
Here and in the Kabylie occur two remarkable forms of 
Argynnis, of which Argynnis auresiana is a type similar to 
the Spanish A. cydippe chlorodippe, and which on that account 
one should expect to occur in the Western Tell Mountains 
rather than in the Kabylie and the Aurés. dA. quresiana 
