XmemgAna 



VOL. III. 



BROOKLYN, JANUARY, 1888. 



NO. 10. 



New Genera and Species of North American Moths. 

 By Henry Edwards. 



Family HETEROGYNID^E, H.-Sch. 

 Thia, new genus. 



Size small. Thorax and abdomen rather stout, the latter extending for nearly 

 half its length behind the posterior wings. Head imbedded deeply between the eyes, 

 which are rather large. Palpi long, slightly bent downwards, the basal article longer 

 than the other two, the apical short, pointed. Antennae simple. Tibiae" and tarsi 

 long, hind tibiae with two long spines, the tarsi also furnished with short spines and 

 the last joint sharply hooked. (The middle and anterior pair aie broken in the ^pe- 

 cimen before me.) Wings short, the anterior pair only slightly longer than the 

 posterior. The margins of both are very distinctly rounded. Fringes long. The 

 wings are densely covered with scab's, so that it is impo-sible to give the neuration 

 accurately. There is, however, apparently no costal vein to the inferior wings, and 

 the internal vein seems l" be very short. 



I have no doubt whatever of the close relationship of this singular 

 form to the European genus Atychia, Latr., which has until recently 

 wanted a permanent resting-place. It has been placed in the Tortricidce, 

 Tineidas, and I think by one author in the Lithosiidce, but it is now by 

 common consent agreed to belong to H. -Schaeffer's family Heterogynidce^ 

 which comes in the system near to the /Egeriadte and Thyridce. My 

 Penthetria parvula may also be placed into H. -Schaeffer's family, so that the 

 present species will he the second of the group now known in X. America, 

 Thia is the Goddess of Light of the Greek Mythology. 

 Thia extranea, n. sp. 



Ibad, thorax, abdomen above and below, and upper surface <>l primaries greenish 

 black, with slight metallic lustre. Fringe slightly golden. Secondaries sub-diaphanous, 

 with the fringe golden brown, with golden scales scattered over tin- surface. The 

 Entomologica Americana. Vol. nx. 28 January 1888. 



