HARRISON G. DYAR. 



45. Primaries with no accessory cell 46. 



Accessory cell present 49. 



46. Antenna? of % ciliate only liOpliodoiita. 



Antennse of % shortly pectinate 47. 



Antennpe of % heavily plumose Ptilopliora. 



47. Tooth on internal margin of primaries large; outer margin not very oblique. 



Ochrostignia. 



Tooth moderate, outer margin more oblique 48. 



Tooth very small ; wings compai-atively narrow Drynion ia. 



48. Antennae pectinate in both sexes; outer margin crenulate Plieosia. 



Antennse of 9 simple ; outer margin usually entire Noto«loiit,a. 



49. Primaries with the outer margin irregular; thorax crested. 



Euhainpsoiiin. 



Primaries with the outer margin crenulate 50. 



Primaries with the outer margin entire 51. 



50. Primaries narrow, thorax smooth Ih iiassa. 



Primaries broad, thorax crested Ptilodon. 



Prnnaries broad, thorax scarcely crested Odoiitosia. 



51. The tooth on internal margin of primaries distinct Hypera^sclira. 



This tooth small Microdoiita. 



52. Primaries with vein 10 arising beyond the accessory cell 53. 



Primaries with vein 10 arising on top of the accessory cell Apela. 



53. Palpi very long Pterostoma. 



Palpi short 54. 



54. Antennpe pectinate !§ipaf alia. 



Anteunte of % fasciculate Besaia. 



55. Vein 10 arising beyond the tip of the accessory cell Tarsolepis. 



Vein 10 arising from the top of the accessory cell Dudiisa. 



Family PTILODONTID^ (Hiibner). 



1810. Ptilodontes Hiibner, Tentanien. 



1818. Ftilodoxtes Hiibner, Verz. bek. Schmett., 145. 



1866. Ptilodontes Grote and Robinson, Ann. N. Y. Lye. N. H. 



1882. Ptilodontes Grote, New Check List. 



181)5. Ptilodontid^e Grote, Abh. Nat. Vereins zu Bremen, xiv. 



1895. Ptilodontid.e Grote, Syst. Lep. Hildesise. 



The oldest name fur this family is Ptilodontidge, as deduced bv 

 Mr. Grote. Hiibner has two types in the Tentaraen which are in- 

 cluded in the family as here limited, Ptilodontes and Andri?e, the 

 former occurring first. These names are used for the "Stamni" or 

 " stirps," the name taken from a typical genus and thus correspond- 

 ing to our requirements for a family name, whereas Hiibner's 

 "tribes" and "families" have descriptive names, and are therefore 

 without standing. 



In the Verzeichniss, the Ptilodonts are scattered under the terms 



TKANS. AM. ENT. SOC. XXIV. JANUARY, 1897. 



