NATURAL SCIENCES OF PHILADELPHIA, 19' 



NEW SPECIES OF NORTH AMERICAN NOCTUIDS:. 

 BY AUG. R. GROTE. 



Acronycta exilis, n. s. 



9. A small species of the size of A. vinnulo,, and apparently 

 belonging to the group T7'iaena of Hiibner. The fore wings are 

 pale, with a 3^ellowisli stain, noticeable on the ordinary spots and 

 on the submedian space. The median lines are wide apart, gemi- 

 nate, faint ; the t. p. line rectangularly exserted opposite the 

 cell, running inwardl}' below the median vein. Both the stigmata 

 are relatively large and vague, the reniform with a central ochery 

 stain, which becomes easily lost. The median shade is obvious 

 between them on costal region. The costal region is regularly 

 dotted with pale black points at the inception of the lines; the 

 median shade is very oblique, and the t. p. line has a separate dot 

 for each of its component lines, liere divaricate; there is also an 

 independent dot midway between the median shade and the inner 

 dot of the t. p. line, above the reniform, wanting in tlie succeeding 

 species. A very narrow black dash above internal angle, broken 

 before the margin. The basal streak and that opposite the cell 

 are obsolete. Hind wings pale fuscous, with whitish frino-es 

 reflecting the markings of the under surface where the common 

 line is distinct and lunulate on the hind wings, more dentate and 

 medially exserted on primaries. A discal lunule on hind wino-s- 

 on the more fuscous primaries a discal dash joined to the dark- 

 marked crossvein. Head and thorax pale like the fore winos: 

 black at the sides of the basal joints. Legs pale ; tarsi black- 

 dotted. 



Expanse 30 mm. Habitat. New York (E. L. Graef). 



Acronycta paupercula, n. s. 



9. Of the same size and appearance as ^. ^xiVi.s-, perhaps a 

 little slighter built. This species differs by the shape of the t. p. 

 line, which is more roundedly, less rectangulary exserted opposite 

 the cell than in its ally, and notably less inwardly inflected below 

 the median vein ; its position is similar in the two species. The 

 costal dots are fewer and wider apart, that above the reniform in 

 A. exilis is here wanting. The geminate t. p. line is finer, the 

 outer line more distinctly black, the inner faint; the orbicular is 



