36 Journal New York Entomological Society. [Vol. vi. 



that has disappeared by coalescence with 7. In some species of this 

 group vein 8 coalesces with 7 to end of cell, producing the appearance 

 of the absence of vein 8. These two groups of Phasgopterids are thus 

 essentially Arctian, though apparently showing the Euchromian struc- 

 ture. 



Bertholdia was erected by Mr. Schaus in this Journal (IV, 137) with 

 type specularis H. S., containing three species. These are superficially 

 recognizable by the large triangular vitreous patch on costa, but other 

 species without this mark must ultimately come in the genus. Mr. 

 Schaus has kindly given me a number of specimens of Bertholdia,. 

 among which I recognize a new form, apparently uncharacterized. 



Bertholdia schausiana, sp. nov. 



Intermediate between specularis and trigona. Primaries lead color, shaded witb 

 pink more or less, especially toward anal angle, dotted with black. Costa red, ex- 

 cept at the vitreous patch, where it is yellow. The patch is excavated superiorly be- 

 tween vein 6 and rosta, produced outward in the interspace 5-6 or simply angled, the 

 lower border nearly straight, lightly shaded with yellow, the veins black dotted. The 

 shape is most like trigona but distinctly angled in the interspace 5-6 and not pointed 

 below. Basal yellow spots absent, or one small one present. Body and hind wings 

 as in trigona. Expanse, 33-39 mm. 



1 $ , 3 ? ? from Mr. Schaus without locality. (Coll. Dyar.) 



Synopsis of Species. 



(Group 1 with large vitreous patch.) 



1. Secondaries vitreous with gray outer border specularis H. S* 



Secondaries white, without gray border 2- 



2. Primaries with white subterminal line albipunctata Schaus. 



Primaries without this line 3. 



3. Subapical patch rounded below, scarcely crossing vein 4 ; basal spots reduced 



schausiana Dyar. 



Subapical patch pointed below to vein 3, or further expanding downward ; basal 



spots usually expanded trigona Grote. 



Gorgon idia, gen. nov. 



Primaries witb median vein 4 branched, cross vein of cell slightly concave, 6 

 from the apex of cell, 7-10 stalked ; secondaries with vein 5 absent, 6 and 7 stalked, 

 8 joining the subcostal for over half the length of the cell. Wiag long, produced, the 

 secondaries small, trigonate. Palpi robust, not reaching vertex of head, first and 

 second joints subequal, third minui e. Ocelli touching the eye. Male antennae serrate 

 ciliate. Two pair of spuis on hind tibise. 



The male has a stridulating organ on the thorax like that of the 

 Asiatic genus Dionychopus, i. e., Spilosoma (?) nivens Menet. of Kirby's. 

 catalogue. (See Psyche, VII, 415, for description.) 



