SYSTEM OF INSECTS. 389 
appear. The above reasons will, I trust, justify me for 
considering them at present as belonging to different 
Orders ; but if further discoveries should confirm the 
opinion Mr. MacLeay espouses, I shall have no hesita- 
tion in yielding to it. 
Def. Metamorphosis incomplete a . 
Mouth emandibulate. 
Prothorax replaced by a collar. 
Wings four, upper pair mostly hairy, lower 
ample, folded : neuration branching. 
Anus without setae. Eggs extruded in a gela- 
tinous mass b . 
9. Lepidoptera c (Glossata ¥.). Concerning this 
Order, no difference of opinion exists amongst Entomo- 
logists. Besides the scales that cover their wings, they 
are distinguished by the peculiar instrument of suction 
formerly described: neither of these characters, how- 
ever, is perfectly universal; some of the Order {Nudaria) 
having no scales upon their wings, and others being 
without any antlia (Aglossa). Other peculiar characters 
are to be found in them ; for instance, the patagia, or 
tippets, that adorn their evanescent thorax d , and the 
tegulce, or base-covers, of a shape quite dissimilar to 
those of Hymcnoptera, which cover and defend the base 
of their wings e . As in the last Order, their legs are 
located all together with scarcely any space intervening 
between them; and they often agree also in their spurs. 
* This is evident from De Geer's account. Ibid. 516. t. xii./. 14. 
/. xv. /. 4. 
1 Plate XX. Fig. 25. c From tents, a scale. 
' Vol. III. p. 537. Plate IX. Fig. 4. e Ibid. Fig. 5. 
