— Ca., 1886 
g 
370 General Notes, [ April, 
cal distribution of both myriopods, Arachnida and insects are of 
The class of insects begin with the Palzodictyoptera, which 
embrace all the Palzozoic insects, and is regarded as equal in rank 
with the Heterometabola (Orthoptera, Neuroptera, Hemiptera and 
Coleoptera). 
The principal forms are well illustrated. As a provisional 
arrangement the Palzodictyoptera, as thus limited, may serve a 
temporary purpose, but the wonderful discoveries of Brongniart 
at Commentry, in France, seems to us to forbid the adoption of 
such a division, and to favor Brongniart’s view that many of them, 
except Eugereon and possibly others, are simply Paleozoic gen- 
era of existing orders of insects, č. ¢., representatives of distinct 
and extinct families, rather than of lost orders. But Brongniart's 
discoveries were not placed in the hands of the scientific public 
until after the work before us was mostly in print. Some of the 
divisions, as the Coleopteroidea, for the unknown manufacturer of 
the suborder Pseudoneuroptera is inexplicable to us, now that 
their structure is so well known. ; 
But however one may differ from the author in matters of classi- 
fication, he can not fail to note the care, labor and learning which 
has been bestowed upon this excellent and most useful summary. 
Oscar SCHMIDT ON THE ORIGIN OF THE DOMESTIC Dos.'—We 
must now refer to the question of the origin of the domestic dog. 
That the whole line of foxes has nothing to do with the dog has 
long been an established fact. On the other hand Darwin en- 
deavored to prove that various wild tribes of men in different 
rts of the globe tamed native wolf-like animals, and that ae 
crossings of these species and breeding of various kinds produc 
the domestic dog of our day. This cpinion of Darwin has been , 
somewhat modified by L. H. Jeitteles, a careful authority on the 
domestic animals. According to him the wolf ( Canis lupus) has 
no connection with the European and west-oriental races of dog 
_the connection being mainly through: the jackal and the nawt 
-wolf (Canis pallipes). The races partly lead back into prehistorie 
times. l 
osest to the jackals we have the so-called turf-d0gy 
known from the turf deposits of the lake-dwellings, and which § 
probably the ancestor of our Pomeranian dogs. Allied to it we 
have the terriers and turnspits. From Canis pallipes is descend 
the so-called dronze-dog, which most. probably came to Europe 
with human immigrants from Asia, and with it the sheep dog 
bull-dog. The ancestor of a third group may perhaps be found 
in the large jackal (Canis /upaster) of North Africa, to which ya 
_1The Mammalia in their relation to primeval times. New York, D. Appen 
of 
Central Europe, the larger sporting dog, the poodle, cur-d ‘and — 
ł 
