178 



INVKUTEBltATE ANIMALS. 



hiirizoiital or little inclined wlien the insect is at rest ; and the 

 \m]yx are never angular, Aninngst tlie best known of the Crepus- 

 c\ilar Li'jilihiiitiTii are the llawk-nioths {Sjj/niigid<i;), comprising 

 some of the largest examijles of tlie whole order. 



The Nocturnal Lapidoptrni have the antennre setacefjus, or dimin- 

 ishing gradually from tlie base to the apex, often seixatetl or pec- 



llijinpcrtht) I, 



r[Mllar. 



tinated (fig. 124); tlie wings in repose are horizontal or deflexed; 

 the ])U|);i' are mo.stly smootli, .sometimes spiny, and often enclosed 

 in a riicoim. Tliis group inelmh/s most of tlie ordinary moths. Cer- 

 tain groups of these comprise .Moths of very small size, which are 

 often spoken of as Mlrroli'jiiihii'tnii. 



(.)i!,Di':r. XL llrjiKvoi'TERA. 



In tills oi'der all the four wings ai-e ]>resent, ,as a rule, and they 

 are all nicmbranous in texture, with few nervures (tig. 'ii^t). The 

 mouth is always furnished « ilh biting-jaws m- mandibles, but often 

 is ada)>ted fur sui-tion as well. The females h.ave the extremity of 

 tlir :i,lMlc,nii'n furiii.shed with an instrument connected with the ]nvi- 

 cess of l;iying eggs (ovi])o.sitor) ; and in very many ca.ses this becomes 



