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a. Spiracular furrows never present on the cephalic margin of the mov- 

 able abdominal segments; labial palpi present and well developed; 

 long setae not present on the face-parts near the caudal margin of 

 the head, on the clypeus, or on the sculptured eye-pieces, 

 b. Labial palpi about equal in width to each maxilla ; cremastral 

 setae about one third the length of the cremaster. 

 c. Dorsal surface of abdomen densely covered with long setae ; body 

 brown, concolorous except sometimes for the lighter transverse 

 conjunctiva ; antennae with the stem of the flagellum very broad 

 and distinctly elevated, 

 d. Abdominal segments 8-10, in dorsal view, distinctly narrowed 

 and tapering; clypeus and labrum on a level with the other 

 face-parts ; cremaster directed caudad ; antennae of male 

 reaching about half the distance along the mesothoracic legs, 



and distinctly pointed Dasycliira Stephens. 



dd. Abdominal segments 8-10, in dorsal view, not narrowed and 

 distinctly tapering; clypeus and labrum both elevated above 

 the level of the other face-parts ; cremaster directed dorsad ; 

 distal half of the antennae of the female distinctly narrowed 

 and pointed, reaching about half the distance along the 



mesothoracic legs Olene Hiibner. 



cc. Dorsal surface of abdomen not very densely covered with setae ; 

 body white variously marked with brown, or vice versa ; anten- 

 nae in both sexes with the stem of the flagellum scarcely indi- 

 cated and the distal end always rounded, in the male extend- 

 ing about half the length of the wings and curved mesad so that 

 they often meet, in the female never reaching half the distance 

 along the mesothoracic legs and never meeting on the meson. 



Hemerocampa Dyar. 

 bb. Labial palpi only half the width of each maxilla; cremastral 

 setae about half the length of the cremaster; antennae in the 

 male broad for almost their entire length and extending about 

 three fourths the length of the wings, adjacent or meeting on the 

 meson, in the female pointed at the distal end and reaching 

 about half the distance along the mesothoracic legs. 



Euproctis Hiibner. 

 aa. Spiracular furrows always present on the cephalic margin of the 

 movable abdominal segments and extending almost to the meson, 

 five or six in number and separated by sharply carinate ridges; 

 caudal portion of face-parts, clypeus, and sculptured eye-pieces 

 with coarse setae similar to those on the body, labial palpi often con- 

 cealed, but sometimes visible as in the remainder of the family. 



Portlietria Hiibner. 

 The following species were examined : 

 Dasycliira pttdibunda Linnaeus 

 Olene man to Strecker 



