98 PROCEEDINGS OF THE NATIONAL MUSEUM. 



by a peculiar dirty reddisli luteous. In this species the transverse 

 anterior line is much less evident, and tlie ordinary spots are very close 

 togeth(;r. The median shade line, which is a distinct and constant 

 character in rinniila, is scarcely traceable in a few 8i)ecimens of this 

 species, while the dagger mark in the submedian interspace crosses the 

 transverse i^osterior line in all my specimens. The front is slightly 

 bulging, but not prominent. The palpi are fairly well developed and 

 reach the middle of the front. Tlie anterior legs of the male are rather 

 short and stout, the tibiae particularly being stout, the epiphysis inserted 

 just a little above the middle and not reaching to the tip. The tarsi are 

 short in proportion to the rest of tlie leg, and altogether this is a stouter 

 built limb than occurs in vinmda. The harpes of the male are moderate 

 in length and quite broad, the tip being oblique. The clasper is small 

 and somewhat hook-like, ending in a somewhat longer point. Eighteen 

 specimens, representing both sexes, have been under examination. 



ACRONYCTA LITHOSPILA Grote. 



(Plates I, fig. 13, adult; XVI, lig. 10, vi-iiatiou ; XXI, fig. 2, male genitalia.) 



Acrotnjita Utlwspila Grotk, Proc. Bost. Soc. Nat. Hist., 1874, XVI, p. 240. 

 Hyhoma lilhospila Ghote, Mitth., a. d. Roem. Mus., Hildesb., No. 3, 1896, p. 7. 



(hound color a very dark bluish gray, with a more or less evident 

 smoky snflusion. Center of the collar and the disc of the thorax 

 smoky. Primaries with all the transverse markings obscure and more 

 or less obsolete. The veins are more or less black marked, and the 

 dusky shadings are longitudinal in their general character, leaving 

 the spaces below the middle of the wing slightly paler than elsewhere. 

 All of these characters give a strigate appearance. The basal line is 

 marked by an oblique streak on the costa. The transverse anterior 

 line is marked in the same way, and nothir.g is to be seen of it below 

 that point. The median shade is also marked by a smoky streak 

 oblicjuely across the costa. The transverse i)Osterior line is traceable 

 across the wing and it is broken, narrow, formed of lunules or dots, 

 which are sometimes only a little defined. There is a series of black 

 terminal dots from which blackish rays extend inward in the inter- 

 spaces. The fringes are interlined with dusky. There is a very slen- 

 der longitudinal black line at base which reaches near to the middle of 

 the wing, and sometimes almost connects with another black line which 

 represents the ordinary dagger mark opposite the anal angle. A more 

 or less evident black line crossing the transverse posterior line oppo- 

 site the cell represents the dagger mark usually found in that position. 

 The ordinary spots are scarcely traceable in most specimens. When 

 best marked the orbicular is very small, faintly outlined by black scales, 

 and a trifle lighter than the ground color. The reniform is an inde- 

 lined, kidney-shaped spot, which is a little brown shaded. The sec- 

 ondaries are whitish, with a faint yellowish tinge in the female; in 



