83 GEI;ECHID/E. 



Genus V. EX^RETIA. ^HI ll'^' 



Ex^RETiA, Sta. Ent. Trans, v. 152 (1849). 



Capilli dcpressi. Ocelli nulli. Antennae {^) puhescode-ciUati^. Haus- 

 tellnm mediocre, squaniatnm. Palpi niaxillarcs brevissinii. Palpi 

 labialcs mediocres, rellexi, articulo secundo infra scoj)ifornii, tertio 

 teniii, loevi, acuto. Ala;oblonga3 brevius ciliatte, anteriorcs cost a levi- 

 ter sinnata, cilils sub aplceni leviter retusis, posteriores niargine pos- 

 tico ante angulum analem rotnndatum sinuato. Alie anteriores : 

 venfc apicalis furcatae ramus inferior in apicem exit ; infra earn rami 

 quinque ; vena; medianfc rami duo primi in fuream conjuncti ; sub- 

 mediana a mediana distat, apice incrassato. Ate posteriores : venic 

 subdorsals ires, tertia in basi plicasformis ; vena mediana trifida ; 

 ccllula costalis sensim coarctata ; vena apicalis simplex. 

 Head smooth. Ocelli none. Antennfe (of the male) pubescent. 

 Tongue of moderate length, scaled. Maxdlary palpi very short. La- 

 bial palpi moderately long, reilexed ; the second joint beneath resem- 

 bling a brush ; the third joint slender, smooth, pointed. Wings ob- 

 long, with short cilia ; the casta of the aidenor rolrigs sllghtty slnuated, 

 and the cilia heloto the apex very slightly emarginate ; the hinder margin 

 of the posterior wings sinuated before the rounded anal angle. In the 

 anterior wings the lower branch of the furcate apical vein runs into the 

 apex; below it are five veins from the discoidal cell; the two first 

 branches of the median vein are united into a fork ; the apical portion 

 of the submcdian, which is remote from the median vein, is thickened. 

 In the posterior wings are three subdorsal veins ; the third thin to- 

 wards the base ; the median vein is trifid ; the costal cell is perceptibly 

 narrowed, and the apical vein is simple. 



Of this peculiar genus only one species is known, wliicli till 

 last year Avas very rare ; it appears more frequent in the northern 

 counties of England, but one specimen was taken in Norfolk by 

 Mr. Wing. The species is thought to frcqnent the Artemisia 

 vulgaris. 



1. Allisella, Sta. Ent. Trans, v. 153. pi. 17. f. 1 (1811)). Alls 

 (pC TTJ[ anticis plumbeo-griseis, stria obliqua costali pone njcdium ruib-grisea, 

 „_'^ . in qua macula disci saturate fusca. Exp. al. 10 lin. 

 ' \ Head reddish-grey. Pace Icaden-grey. Pal])i reddish-gi-ey, inter- 



nally leadcn-grey. Antenua3 dark fuscous. Anterior wings leaden- 

 grey, with a reddish-grey blotch near the inner margin towards the 

 base, a short reddish-grey oblicjue streak from the costa before the 

 middle, terminating in a small dark fuscous spot, and an oblif/ue reddish- 

 grey streak from the casta a tittle beyo)id the tt/iddle, reaching nearly 

 half across the wing; /;/. this streak on. the disc is an oljlique dark fiis- 

 cans spat ; the apical portion of the wing is rather clouded with reddish- 

 grey, and there arc some reddish-grey spots along the apex of the costa ; 



