AMERICAN LEPIDOPTERA. 91 



This little species seems at first sight allied to Calpe or Hemiceras. 

 Tn outline it has a spurious resemblance to Coelodasys. From my 

 nute book this is the Dory odes acutalis of the British Museum Coll. 

 and Lists; not, of course, Guenee's species. 



PARGRAPTA, Hilbner. 



The wings are ample, long and angulate. Primaries with the apical 

 augle acute. Below the apex the external margin sweeps inwardly, 

 but is outwardly produced and full at the extremities of median 

 veinlets, sloping again inwardly to the retired internal angle. Fore- 

 wings with 12 veins. Veins 4 and 5 spring together from the median 

 nervure, 5 a little bent at base towards 4; vein 8 a little removed 

 from 4; these three nervules appear propinquitous at base, as if aris- 

 ing together. Discal cell open. A small accessory cell, from the lower 

 angulation of which vein 6 is thrown off on external margin. Veins 

 7 and 8 are thrown off together from the outer angulation of the 

 accessory cell; vein 7 on to the external margin, subapically; vein 8 

 on to the costal margin just before the real apex of the wing. Vein 

 9 out of 8 on to the costal margin, a short furcation. Costal veins 

 approximate. Hindwings with the external margin slightly acutely 

 projected below the extremity of vein 7; the margin appears slightly 

 interspaceally scalloped, retires below this first subapical projection, 

 rising again at extremity of median veinlets. Nervules long ; discal 

 cell open. Veins 3 and 4 arise together. Vein 5 is independant, and 

 arise a little nearer the base of the wing. 



The body is tolerably stout; abdomen bluntly terminated, a little 

 recurved in % , no longer than secondaries. Palpi very slender, di- 

 varicate closely scaled; 2d joint elongate, obliquely ascending; 3d 

 joint longer than usual, attenuate, porrected at right angles with the 

 second. Head small. Legs rather short and slender, closely scaled; 

 hind tibiae with a pair of central spurs longer than those at the apices 

 of the joint. Antennae short and simple. 



The general resemblance of P. decoralis to the Geometridae is very 

 great. At first we seem to have a species of Selenia or Endropia be- 

 fore us. The squamation is somewhat thin and powdery. 



Pargrapta decoralis, Hiibnen, Zutr. 91, 92.— £ 9 .—Grey with a lilac 

 hue, distinctly shaded with ferruginous, of varying tint. Usually the male is 

 brighter ferruginous and less distinctly marked. Basal half-line distinct on 

 costa. T. a line arcuate, distinctly inwardly notched on disc. Outer half of 

 the median space, margined inwardly by the median shade, ferruginous; here 



