LEPIDOPTERA HETEROCERA. 41] 



Noctua tetragona, Haw. Lep. Brit. 124. 



Sideridis xanthographa, H'ubn. Verz. Sckmett. 232, 2328. 



a — s. England. From Mr. Stephens' collection. 



t — y. England. 



z — cc. Europe. From M. Becker's collection* 



Fam. 6. GRTHGSID^. 



Corpus Tobustum aut validum. Proboscis mediocriter longa aut 

 brevis. Palpi subrecti, saepissime breves et porrecti, raro ascen- 

 dentes; articulus 3us brevis, conspicuus. Antennae ciliatae, raris- 

 sime nudae, maris nonnunquam serratae aut subpectinatae. Thorax 

 raro cristatus. Abdomen saepissime glabrum. Pedes mediocres, 

 raro spinosi. Alae anticae coloribus variis, posticas obtegentes, linea 

 submarginali saepissime recta. 



Orthosidae, Gum. Ann. Soc. Ent. Fr. vi. 224 ; Noct. i. 338. 



Body robust or rather stout. Proboscis short or moderately 

 long. Palpi almost straight, generally short and porrect, rarely as- 

 cending; third joint short, distinct. Antennae ciliated, very rarely 

 bare, occasionally serrated or slightly pectinated in the male. Tho- 

 rax rarely crested. Abdomen very generally smooth. Legs mode- 

 rately long, rarely spinose. Fore wings with various colours, 

 entirely covering the hind wings in repose ; submarginal transverse 

 line very generally straight. 



A. Tibiae postica? non dense fasciculatae. 



A. Alae anticae margine exteriore non angulato. 

 a. Thorax non lanuginosus. 



a. Alae anticae margine exteriore non denticulato. 

 i. Tibiae posticae calcaribus parvis. 

 * Abdomen lateribus pilosissirais. 



10. Hypotbix, Guen. 

 ** Abdomen lateribus non pilosissimis. 



f Alae anticae margine exteriore non undulato. 

 f Thorax non cristatus. 



§ Palpi brevissimi. - 1. Panolis, Hiibn. 

 §§ Palpi non brevissimi. 



X Alae anticae mediocriter latae. 



6. Semiophora, Stepk. 

 X X Alae anticae latiusculae. 



19. Mesogona, Boisd. 



2n2 



