Mr. J. Gould on new Sj^ecies of the Genus Eutoxeres, 455 



fact by the cTiscoverj, 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, Hackel supposes, ori- 

 ginated from the Toroptera later than the Coleoptera and 

 Hymenoptera, as their first palajontological 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 {Ahgeschlossenheit) of these two orders, no con- 

 clusions can be derived from probabilities about them. 



With this I conclude my report upon this part of Hackel's 

 remarkalile 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. 



LIT. — On some additional Species of the Genus Eutoxeres. 

 By J. Gould, F.E.S. &c. 



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 {Eutoxeres aqnila and 

 E. Condamini) ; 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 E. 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- 

 guished 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 



