The CANADIAN ENTOMOLOGIST. Ill 



Byssodes Obnissaia Grote. 



I have followed M. Guenee's terminations in this tropical genus. Our 

 Florida species seems allied to Faradoxata, but Guenee does not mention 

 the basal ochre metal-margined line ; the third band at the middle is not 

 marked with a "cellular spot" and I should not call the wings "narrow 

 and elongated" ; our species is also larger. There seems to be a number 

 of species very similar ; and, perhaps, geographical races rather than 

 species. With Racheospila cupedmaria, this species from Indian River 

 shows that the GeonietridcE of South Florida are allied to those of the 

 West Indies. The same fact is exhibited by the representatives of other 

 families of Lepidoptera. 



A PHYSIOLOGICAL ARRANGEMENT OF INSECTS. 



BY A. H. SWINTON, GUILDFORD, ENGLAND. 



Extracted from The Entomologist, vol. xi., p. 255 ; and Yorkshire Naturalist, vol. vii., 



p. 45 ; with author's revision. 



Having in times gone by perused with interest certain essays from the 

 pen of the late Edward Newman on the subject of a true or physiological 

 arrangement of Insecta, may I now be allowed to call attention to the 

 additional evidence adducible from the recent investigations of their 

 organs of sensation, a matter I had lately the honor of placing before 

 public attention in my book, Insect Variety. 



Viewed in this new light, the presence of auditory organs and well- 

 developed eyes place the Orthoptera first in this list ; and these would be 

 followed by a group of the Honioptcra, the Cicadidce, where we find the 

 auditory organs are highly developed, but sight less potent. Next to 

 these appear to come Lepidoptera, where the Nodiirni stand first as hav- 

 ing well-defined auditory organs, and the Diurni second from reason of 

 their excellent optic organs. Then would follow Coleoptera, which as far 

 as Europe is concerned, certainly give evidence of possessing auditory 

 apparatuses in two of their groups, the Lamellicornia and Longicornia, 

 although in the latter the visual organs are imperfect. As far as I can 

 learn, the species of Hymenoptera, Neuroptera and Diptera, have the 



