358 GROTE AND ROBINSON. 



a very distinct bliick dot; the latter always to be seen, whereas the 

 true annulus of the orbicular is apt to become obsolete and is difficult 

 of detection. The reniform spot is prominent, ovate, white, with an inter- 

 nal diffuse blackish annulus which almost entirely fills it, leaving the 

 ground color to appear as a narrow encircling ring. Beyond the reni- 

 form, the dark green color of the median space again obtains to the 

 transverse posterior line, which is here inwardly edged with black 

 scales. The transverse posterior line is very irregular, and appears 

 as a paler shade against the darker portions of the wing which it 

 mannns. Superiorly it is prominently arcuated over the nervules to me- 

 dian nervure, where it runs inwardly to within the reniform, whence 

 it runs downwardly, forming a short tooth below median nervure and 

 a long outward arcuation, to internal margin. The subterminal space, 

 from below the reniform to internal angle, is whitish, usually suffused 

 with a delicate roseate hue; this portion of the wing forms a promi- 

 nent feature in the ornamentation of the species. Superiorly the sub- 

 terminal space is dark olivaceous green with longitudinal streaks of 

 black, and powdered with black scales. The subterminal line is white; 

 superiorly it is shortly dentate on the blackish apical portion of the 

 wing, it runs shortly and straightly outwardly above the broadest lon- 

 gitudinal black dash, and then runs downwardly, forming slight arcu- 

 ations to internal margin. There is a terminal series of greenish inter- 

 spaceal marks, the broken terminal line. Fringes tinged with greenish, 

 with a basal linear shade. Secondaries griseous, silky, darker shaded 

 towards the external edge, with faint indications of a transverse line 

 and discal dot. Fringes whitish, paler than thewing, long, with a faint, 

 narrow, dark internal line. Beneath both wings are stained with ochre- 

 ous. The primaries are largely cinereous centrally. The secondaries 

 are powdered with dark scales, and show a distinct discal dot and an 

 often indistinct transverse shade line. Both wings are neatly edged 

 along the external margins by a broken line. 



Expanse, 19 to 20 m. m. Length of body, 8 m. m. 



Habitat. — Atlantic District. (Mass. to Penua. !) 



Allied to E. carncola, Gn., rather than to any of the other species 

 of the genus, but very distinct in its coloration, which gives it the false 

 appearance of an Acontia. E. synochitis is of common occurrence dur- 

 in"- June and July, in the vicinity of Brooklyn, N. Y., where it may 

 be found on fences in company with E-carneola^Cu. and E. nigritula,6r'/(. 



Erastria musta, n. sp. 



% 9 . Size small. Head and thorax obscure griseous mixed with 

 blackish scales; collar with a faint blackish line. Antennae dark. 



