Q7 



(a) Ephemerid/E (mayflies). 

 (/>) Odonata (dragonflies). 



(c) Plecoptera (stoneflies, etc.). 



(d) Corrodentia (termites, etc.). 



(e) Neuroptera (lacewings, etc.). 

 (/) PaxorpaT/E (scorpion-flies, eic). 

 (g) Trichoptera (caddis-flies). 



In 1886 Packard proposed sixteen orders, the Neuroptera being 

 broken up into — 



(a) Platvptera (teraiites, etc.). 



(/>) Odonata. 



{c) Plectoptera (mayflies). 



(d) Neuroptera. 



(e) Mecaptera (scorp'on-flies, etc.). 

 (/) Trichoptera. 



In 1889 Dr. L). Sharp brought forward a scheme at the International 

 Congress of Zoology at Cambridge, which afterwards appeared in 

 the " Encyclopaedia Britannica," and has been adopted in Professor 

 Sedgwick's "Student's Text-Book f)f Zoology." This scheme will 

 be found in nearly the same form in an article by Dr. Sharp in the 

 "Entomologist," vol. xlii, 1909, p. 270, and is the system now used 

 in the general index to that periodical. It will be noticed that this 

 disintegration of the Neuroptera of Linnaeus follows somewhat 

 closely the lines suggested by Brauer. It is as follows : 



(a) MAELOPHAdA (bird-lice). 



(/--) Plecoptera (stoneflies, etc.). 



(c) Psocoptera (book-lice, etc ). 



(d) P^mbioptera. 



(e) Isoptera (termites, etc.). 

 (/) Ephe.meroptera (mayflies). 



l^) Paraneuroptera, or Odon.\ta (dragonflies). 



(//) Neuroptrr.a* [=Planipennia] (lacewings, etc.). 



(/) Trichoptera (caddis-flies). 



'I'his arrangement, having been accepted at Cambridge, where 

 Prof. Sedgwick (now Professor of Zoology at the Imperial College, 

 South Kensington) then was, it has the sanction of authority iti 

 various ways ; and 7ae might do worse than boldly accept it also. I 

 might go farther and say it is a duty entomologists owe to their 

 science, that they should work with some definite idea as to the lie of 

 the land they are investigating. 



It is in this restricted sense, of course, that I am using the term 

 Neuroptera, and with this understanding I give the following 

 diagnosis of the order : 



Car)iivflrous insects with mandihiiiate {biting) inouth ; afite/ifm 



* With some entomologists there is a question as to whether the mouth- 

 parts of Panorpa in the imago and larva are sufficiently different to justify a 

 separate order being formed for them. I have not thought well to separate 

 them from the Neuroptera. 



