54 HYPONOMEUTID^E. 



of Sci/thropia being gregarious, fiiniislics anoi]\cr point of resem- 

 blance with Ilyponomenta. 



The six genera of this family may be easily distinguislied, as 

 follows : — 



a. Head rough. 



h. Y\\\\)\ porrectcd. 1. Savammerdamia. 

 h h. Valpi drooping. 2. Scythropia. 

 a a. Head smooth. 

 c. Palpi reflcxed. 



d. Terminal joint blunt. 



e. Posterior wings witli a hyaline patfli at tlic l)asf. 3. Ilvro- 



NOMEUTA. 



e e. Posterior wings witli no hyaline pal eh at th(; base. (>. 

 Prays. 

 d d. Terminal joint pointed. 4. Anesychia. 

 c c. Palpi porrectcd, short. .5. Chalybe. 



Genus I. SWAMMERDAMIA. Jf-^T-?^ 



a-^ 



Ennbiea p., Haw. Lifa p., Trcit. Telea p., Step. Tiiien ])., Dup. ; 

 Zell. Molilalia \s., Telu'iuia p., et SwaiiuiierJainiit p., Hiib. 



Capilli hirsuti. Ocelli nulli. Palpi labialcs ^;o;vY'r/i, breves, iiliformes, 

 subattenuati. Haustellum breve, nudum. Al;c anteriores elongat;x3, 

 mediocriter ciliata3. Ahr; postcriores elongato-ovata^, /oz/ro/r/ lii/alina 

 basali. Alpe anteriores : vena apicalis sim])lcx ante apicem exit, 

 infra cam tantum rami qninqiie ; stigma disthietum ; vena sid)dorsalis 

 simplex; submediana a mediana distat, in tine incrassata ; poste- 

 riores : ccUula costalis subito coarctata, ante mcdlnm. deaineiile ; vena 

 mediana bifida; cellula diseoidalis obtusa. 



Head rough. Ocelli none. Labial palpi porrectcd, sliort, flliforni, 

 rather attenuated. Tongue short, naked. Anterior wings elongate, 

 with moderate cilia. Posterior wings elongate-oval, iriih a Injuline 

 patch at the base. In the anterior wings a simple apical vinu nms 

 into the costa before the apex, below it are only_//»f' veins to the hinthn- 

 margin ; the stigma is distinct ; the subdorsal vein simple ; the sid)- 

 mcdian vein remote from the median vein is posteriorly thickened. In 

 the posterior wings the costal cell is suddenly narrowed, and terniinales 

 before the middle of the whuj ; the median vein is tiifut, and the diseoidal 

 cell obtuse. 



The perf(;et insects of this genus have a pleasant wavy zigzag 

 (light, and fre(]ucntly disport tlienisclves during the hot sunshine. 

 \\ hen (liey repose, it is with the abdomen consulerably elevated, 

 so that they a])pear to stand somewhat on their heads; this posi- 

 tion, their greyish-white colour, aiul their cyliiulric form when llic 

 wings arc closed, cause them to be easily mistaken for the heces 



