18 Journal New York Ent. Soc. [Vol. ii. 



The american forms differ in general from the European in 

 lacking the longitudinal white band. The form caja with red 

 secondaries inhabits the Pacific Northwest. Race americana 

 inhabits the Northern Atlantic States. The race utahcnsis, from 

 the Rocky Mountains region, differs in the broader white bands 

 and yellow secondaries. It corresponds strictly to the form wiskotti 

 Stand, from Asia Minor, differing in the character pointed out. 

 The form opulenta from Alaska seems to be only a race of caja in 

 which the white marks are enormously developed. The var. 

 transmontana is more marked with white than tttahensis^ less so than 

 opulenta. 



Genus Ectypia Clemens. 



1861 — Ectypia Ci.EMENS, Proc. Acad. Sci. Phil. 1S60, p. 529. 

 E. bivittata Clemens. 



1861 — Ectvpia bivittata CLEMENS, Proc. Acad. Sci. Phil., i860, p. 530. 



1887 — Spilosoma nigroJla7>a Graef, Ent. Amer., Vol. Ill, p. 43. 



White; patagia with luteous and black stripe. Abdomen with 

 dorsal and lateral black spots and sub-dorsal orange yellow shade. 

 On primaries, a number of elongate black spots in three irre- 

 gular rows ; one spot on origin of vein 2 is somewhat arrow-shaped. 

 Secondaries white. Expanse, 45 mm. 

 Habitat, Texas. 



In this species the accessory cell may be absent as shown by 

 the observation of Prof. J. B. Smith. 



Family AGARISTID.^. 

 Synopsis of i^enera. 

 Veins 7 — 9 of primaries from a stall; at end of accessory cell. 



Antenn?e of (^ simple ........ Seudyra. 



Antennrc of ^f pectinated Psychomorpha. 



Vein 7 from accessory cell ; veins 8 and g stalked. 



Antennre swollen before tip ....... . Alypia. 



Antenn;v filiform, serrate at pectinate. 

 N'ein 5 of secondaries distinct. 

 Thorax not tufted. 



Wings narrow ; body slender ..... Alypioides. 



Wings broad, square at apices ; color black . , Pseudalypia. 



Wings trigonate ; body robust. 



Antenna; short, serrate ; an enormous trilid fionial 



plate-like process .... Eupseudomorpha. 



Antennae long, filiform ; a frontal plate wiili lip- 

 shaped outer margin . . . . . Copidryas. 



Thorax with central scaled tuft. 



Antenna: filiform Euthisanotia. 



Antenna.' pectinated ......... Ciris. 



Vein 5 weak or absent .... (Acherdoa in Liparid^e). 



