LEPIDOPTERA HETEROCERA. 281 



Hydrilla, Boisd. Ind. Meth. 138; Dup. ; Guen. Noct. i. 236. 

 Caradrina, p., Ochs.; Treit. 



Body very slender. Head small. Proboscis moderately long. 

 Palpi slender, porrect or incumbent, extending beyond the head ; 

 third joint conical, not more than one-sixth of the length ot the 

 second. Antennae slender, more than half the length ol the body. 

 Abdomen extending a little bevond the hind wings. Legs slender, 

 rather long ; hind tibiae with four long spurs. Wings moderately 

 broad. Fore wings straight in front, slightly angular at the tips, 

 hardly oblique along the exterior border. 



1. Hydrilla palustris. 

 Cinerea ; alee antica stigmatibus ambobus punctiformibus nigris, 

 strigis ambabus denticulatis, tinea undulata obsoleta basim 

 versus nigro-cincta. 

 Noctua palustris, Hilbn. Samml. Eur. Schmett. Noct. f. 367. 

 Athetis palustris, H'ubn. Verz. Schmett. 209, 2089. 

 Caradrina palustris, Treit. Schmett. Eur. ii. 255. Dup. Hist. Nat. 



Up. Fr. Suppl. iii. 578, pi. 48. 

 Hydrilla palustris, Boisd. Ind. Meth. 138, 1116. Guen Ann. Soc. 

 Ent. Fr. vi. 236 ; Noct. i. 237, 380. Herr.-Schceff. Eur. 

 Schmett. ii. 214, 103 ; ii. Noct. pi. 58, f. 292. Eversm. Faun. 

 Volg.26l. 

 Hydrilla exilis, Eversm. Bull. Soc. Imp. Nat. Mosc. 1842. 



Valais, Switzerland. Austria. South Eussia. 



2. Hydrilla adoleta. 

 H. palustri affinis ; palpi minus hirti, articulo So magis dis- 

 tincto; alee anticm ochraceo-cinerem, nigro conspersa, hneis 

 duabus medianis vagis, venis apice margineque ex tenor e ob- 

 scurioribus; posticce sordide albida, strigis margmahbus 

 cinereis. 

 Hydrilla adoleta, Guen. Noct. i. 238, 381. 

 South- Eussia. 



3. Hydrilla obltterata. 

 Aim subnitidce dilute subcinerem, anticce fusco irroratm.strigapone 

 medium punctulata punctisque in costa minutis albidis, ktura 

 quadrata obscure fusca inter maculas ordinarias. 



2B3 



