194 r;RACiLAKiii).i:. 



Genus I. GRACIIiARIA. W . Vll . 1 



GiiACiLARiA, Zell. Isis, 1839. p. 208. Gmcillnrla, Dup. Cat. Gra- 

 cUIaria p., Haw. ; Curt. ; Dup. L. F. xi. Oniix p., Treit. ; Zett. 

 Grac'dlaria p. et Eiispilapteri/x, Step. 



Caput snpcrne ac in fronte lav'irjntnm. Ocelli nulli. Antenna? alarum 

 anteriorum longitudine axjuantcs, tenues, articulo basali elongate, 

 incrassato. Haustellnm squamatum. Palpi maxillares longiusculi, 

 tijiformes. Palpi labiales tenues, adsccndentes, cylindrici, articulo 

 secundo squamis appressis, non famculnto, articulo tertio acuniinato. 

 AlfE longe ciliatcC, anteriores elongatci3, posteriores lanceolatae ; an- 

 teriores : vena subcostalis Ijasim versus interrupta, e ccllulcV discoi- 

 dalis parte postica vena? novem oriuntur, cpiatuor in costani, quiuque 

 in margincin posticum cxeuntibus ; subdorsalis simplex ; posteriores: 

 vena apicalis ante apicem exit, infra earn vena f'urcata, vena nie(Hana 

 trifida. 



Head above and in front smooili. Ocelli none. Antenna? as long 

 as the anterior wings, slender ; the basal joint elongate, thickened. 

 Tongue clothed with scales. Maxillary palpi rather long, filiforra. 

 Labial palpi slender, ascending, cylindrical ; the second joint with ap- 

 pressed scales, not tufted ; the terminal joint pointed. Wings with 

 long cilia, the anterior elongate, the posterior lanceolate. In the an- 

 terior wings the subcostal vein is intemipted towards the base ; from 

 the hinder portion of the discoidal cell nine veins proceed, of which 

 four go into the costa, and iive into the hinder margin ; the subdorsal 

 vein is simj)lc ; in the posterior M'ings the aj)ical vein terminates above 

 the apex, below it is a furcate vein ; the median vein is tritid. 



In the small species of this genus, the maxillary palpi are less de- 

 veloped, and the labial palpi arc almost drooping. 



The species of this genus are elegant in form and frequently 

 gaily coloured, or prettily mottled. Some species are double- 

 brooded, the autumnal brood generally hybernating, and being 

 met with in wasted condition in the spring; they feed upon low 

 plants, as well as upon slirubs and trees. The larvae have only 

 fourteen feet; when young they mine the leaves, but at a later 

 period of growth many of the species construct cones, by rolling 

 up a portion of a leaf; they devour the inner ])ortion of these 

 cones, which thus become discoloured and are easily observed. 



The species of the genus may be arranged in the following 

 table :— 

 a. Ijargc sj)ecies. 



h. Anterior wings with a distinct paler trigonal mark on the costa. 



Species 1, 2. 

 h h. Anterior wings with a more or less distinctly margined, but 

 tiardly paler trigo)K>l mark on the costa. Species 3-8. 



