( 320 ) 



THE GENUS EXiERETIA. 



This goiius was rouiidcil in 1H49 

 for the rfeci)tiuii of a single species, 

 Avhich still rcinaius its sole repre- 

 sentative. 



The form of the anterior wings 

 gives the most striking character, 

 the costa being a little depressed 

 beyond the middle and then swelling 

 out again, and the cilia of the hind 

 margin arc slightly emargiuate below 

 the apex — in both these respects it 

 resembles many species of the genus 

 Peronea ( Tcras), from which, how- 

 ever, the longer and narrower ante- 

 rior wings would enable us to sepa- 

 rate a specimen of Exferctia, even 

 though its head were wanting. 



The more convex abdomen, and 

 the shorter terminal joint of the 

 palpi, serve further to distinguish 

 Excerctia from Deprcssaria. 



The discovery of the larva, first 

 announced in 1860 (" Entomologist's 

 Weekly Intelligencer," vol. 8, p. 118, 

 and "Zoologist," 1860, p. 7155), was 

 eight years later noticed more in 

 detail by Dr. Schlcich of Stettin 

 (Stett. Ent. Zeit. 1868, ji. 392). 



LE GENRE EXiERETIA. 



Ce genre fut fonde en 1849 pour 

 rccevoir une seulc espece, (pii reste 

 encore a ce jour unique dans le 

 genre. 



La coupe des ailes anterieurcs 

 uous donne le caractere le plus frap- 

 pant, la cote derriere le milieu etant 

 nn pen deprimee et s'elargissant 

 cnsuitc, et les fianges du bord pos- 

 terieur sont uu peu creusecs dessous 

 le bout — quant a ces deux carac- 

 teres I'insecte ressemble beau coup a 

 plusieurs especes du genre Peronea 

 {Teras), mais cependant les ailes 

 auterieui'es plus longues et phis 

 etroitcs suffiraient toujours a dis- 

 tinguer line Exccretia, meme si 

 Findividu avalt perdu la tetc. 



L'abdomen plus convcxe, et 

 I'article terminal des palpes plus 

 court, pcrvent de plus a distinguer 

 Exccreda de Depressaj'ia. 



'La, decouverte de la chenille, 

 annoncee d'abord en 1860 (*' Ento- 

 mologist's Weekly Intelligencer," 

 vol. 8, p. 118, et " Zoologist," 1860, 

 p. 7155), fut donnee pins en detail 

 hnit annecs plus tard par le Docteur 

 Schlcich a Stettin (Stett. Ent. Zeit. 

 1868, p. 392). 



