168 PROCEEDINGS OF THE NATIONAL MUSEUM. vol xxv. 



line is punctiforni and, in general, is complete or at least completel}^ 

 traceable. 



Ligata has a distinct pinkish shading, and the surface is obviousl}^ 

 black powdered. The markings are rather well defined and the trans- 

 verse posterior line is generally complete. The species is from the 

 South and Southwest. 



Flnhilis is exactly like ligata except that the pinkish tinge is less 

 obyious and the punctate transverse posterior line is not quite so well 

 marked. It is from Long Island. 



Rimosa is ligata with all the markings more obscure. 



It is more than probable that all these are slight local varieties of 

 one species which is not uncommon southwardly, hwt ])ecomes very 

 rare as we go north. Of rimosa^ Dr. Thaxter was good enough to 

 send me a male, which he compared with the type in his possession, 

 and besides these two examples I know of none in collections. Years 

 ago Mr. Tepper took two examples on Long Island, which formed the 

 types oiflahilis. One of these is now in the British Museum and one 

 is at the agricultural college in Michigan. I have an example com- 

 pared with the British Museum type, and, by the courtesy of Prof. 

 K. W. Pettit, I was able to compare the other type as well. There 

 are no other specimens known to me Sisjlahilis in collections. 



The male genitalia are exactly alike in all three forms. The harpes 

 consist of a broad, oblong basal piece from which a narrow oblong- 

 process, rounded at tip, extends superiorly. The inferior angle of 

 this broad basal piece is drawn out into a sharp point. At the rounded 

 tip there are two long, spine-like hairs, but no other armature. At 

 the extreme base of each harpe is a long, stout, somewhat curved, 

 and irregularly toothed chitinouy process. The clasper forms one 

 slender, cjiindrical superior finger and two stouter, more beak-like, 

 parallel, pointed processes. 



The leg tuftings in the male show no stronglj" marked characters, 

 the femoral tuftings and f ringings being scarcely more obvious than 

 in the female. The antennal ciliations, however, are well marked. It 

 is scarcely needful to attempt the separation of these forms by means 

 of a table. 



The group msueta is composed of species with short, stumpy wings, 

 robust bod}", the thorax quadrate, with a divided crest behind the col- 

 lar, the latter being well marked and with transverse darker lines. 

 The patagii© are also well defined and a little uplifted. The vestiture 

 is coarse and the species have a roughly powdered appearance, due to 

 a speckling of black. The ground color is a dull grayish luteous with 

 a tendency to reddish which is dominant in insueta. The primaries 

 have a streaky appearance, the veins being usualh^ lighter than the 

 margins and in the interspaces a dusk}' streak is usually obvious. The 

 median vein is usually white or at least paler, but there is no well- 



