Mr. J. Gould on new Species of the Genus Eutoxeres. 455 
fact by the discovery, in the Devonian strata of New Bruns- 
wick already mentioned, of an organism uniting the characters 
of both orders. With regard to the Coleoptera, he assumes 
that they were developed from the Orthoptera, and the Hy- 
menoptera from the Neuroptera or Pseudo-Neuroptera. 
The Sugentia, again, include three divisions :—Hemiptera, 
Diptera, and Lepidoptera. All these, Hiickel supposes, ori- 
inated from the Toroptera later than the Coleoptera and 
ymenoptera, as their first paleontological traces are derived 
only from the Jurassic strata. The knowledge of Eugereon, 
however, on the other hand, makes him think it not impro- 
bable that the Hemiptera diverged from the Toroptera as 
early as the Primary periods. The origin of the Diptera and 
Lepidoptera he leaves in doubt, as, in consequence of the 
segregation (Abgeschlossenheit) of these two orders, no con- 
clusions can be derived from probabilities about them. 
With this I conclude my report upon this part of Hickel’s 
remarkable book. I hope soon to be able to make some com- 
munications upon special embryological investigations and 
their general results, as this department is now being worked 
on several hands with particular predilection. At any rate, 
however, the satisfactory fact is to be proved that entomo- 
logy, as well as morphology in general, has acquired a new 
and fruitful impulse from the Darwinian reform, and that it 
will be the fault of entomologists themselves if they do not 
_ assist in the construction of the new road. 
LII.—On some additional Species of the Genus Eutoxeres. 
By J. Gounp, F.R.S. &e. 
I HAVE for some time past had reason to believe that the 
Humming-birds of this highly singular form comprised more 
‘species than the two already described (Hutoxeres aquila and 
. Condamint) ; but it is only of late that I have acquired 
sufficient materials to justify my arriving at any satisfactory 
conclusion on the subject. At this moment I have before me 
three specimens of the true L. aquila from New Granada, seven 
skins of a bird from the neighbourhood of Quito, which I con- 
sider to be distinct from that species, and three from Veragua, 
which differ slightly from both. 
E. aquila is the largest species of the genus, and is distin- 
fe by the snow-white shafts of its tail-feathers, which 
doubtless show very conspicuously when the bird is on the 
wing and the tail widely spread; this character is found in 
every specimen I have examined, and, I believe, will prove 
