NO. 1140. NORTH AMERICAN NOCTUIDAE— SMITH AND DYAR. 93 



their termination. The clasper is very stout, the superior process not 

 very long, unusually broad, and only a little curved, the finger-like 

 process from the upper margin longer and well developed, almost 

 straight. 



ACRONYCTA VINNULA Grote. 



(Plates IV, fig. 11, adult; XVII, tig. 23, leg; XXI, fig. 9, male genifl^lia.) 



Microcoelia vintnila Grote, Proc. Ent. Soc. Pliila., 1864, II, p. 4.36, pi. ix, fig. 2. 

 Acronycta vinnula Grote, Trans. Am. Ent. Soc, 1868, II, p. 118. 

 Apatela vinnula Grote, Papilio, 1883, III, p. 68. 



Ground color milky white, more or less suffused with greenish or 

 luteous mottlings. The disk of the thorax is quite usually dark, and 

 sometimes the tij) of the collar is almost blackish. The patagiae at the 

 sides are also black marked. The primaries have all the ordinary 

 markings distinct, but very variably evident. The basal line is gemi- 

 nate and marked on the costa, sometimes black, sometimes greenish 

 gray, or of an intermediate shade. The transverse anterior line is 

 also geminate, outwardly oblique, more or less toothed on the veins, 

 yet as a whole quite even in course. It maybe black or greenish gray, 

 or the inner line may be black and the outer green, or parts of both 

 may be of either color. There is a distinct median shade running 

 obliquely from the costa across the reniform and thence with an almost 

 right angle to the inner margin. The line may be entirely greenish, or 

 the part from the costa to the reniform may be black. The transverse 

 po.sterior line is indistinctly geminate, the outer line black and distinct, a 

 little lunulated, but as a whole with a very even outcurve over the cell. 

 The inner line is well marked on the costa, but in most cases is very 

 vague beyond that point. The intermediate space is often white 

 marked and quite prominent, though sometimes of the usual ground 

 color. The snbterminal space is greenish and vaguely defines an 

 irregular subterminal line by its contrast with the terminal space. 

 There is a series of black terminal dots, beyond which the wings are 

 cut with blackish. There is a more or less distinct black mark between 

 veins 5 and 0, extending from the margin inwardly and sometimes 

 reaching the transverse i)Osterior line. There is a black dash opposite 

 the anal angle, which reaches to but does not cross the transverse i)os- 

 terior line, and which is more or less shaded with black and green. 

 There is a distinct basal black streak, which is almost broken in the 

 middle. The orbicular is round, or nearly so, completely defined in 

 either black or greenish. The reniform is moderate in size, well defined 

 in most instances, and crescent rather than kidney shaped. The sec 

 ondaries are dirty whitish in the male, dark in the female. Beneath 

 whitish, with the disk of the primaries mostly smoky; secondaries with 

 a distinct discal dot, and both wings with an outer line, which is much 

 more defined on the secondaries. 



Exx)ause, 1.20 to 1.30 inches (30 to 32 mm.). 



