AMERICAN LEPIDOPTERA. 5 



median interspace before the t. p. line. The species has been and 

 can easily be confused with its ally; but the darker secondaries dis- 

 tinguish it readily. The male genitalia differ markedly. The clam- 

 per is shorter, broader and tapers irregularly to a small rounded tip 

 almost from the base. There is a small patch of spinules on the 

 surface of the tip and not at its edge only. The clasper or hook is 

 rather small and stout. The oblique ridge is broad, its edge irregu- 

 lar, the tooth at its middle small, three pronged. The extension 

 beyond the tip is rather short, irregular and drawn to a long point. 

 Altogether this is totally different from the corresponding parts of 

 bethimei. 



l7inominata, which is the species erroneously determined by Mr. 

 Grote as signosa Wlk., differs at once by the reddish shading of the 

 primaries and the blackish secondaries. The maculation of the pri- 

 maries is almost exactly like that of hethunei, and some washed out 

 examples are apt to be confusing until the uniformly darker second- 

 aries and abdomen are noted. The male organs differ from the two 

 last preceding. The harpes are narrow, elongate and taper along 

 the lower edge toward a small, nearly pointed tip, edged with a few 

 spinules. The clasper is much longer and not so stout as in the 

 allied species. The edge of the oblique ridge is serrated, not pro- 

 duced into an obvious tooth, and it extends beyond the tip in a long, 

 curved, pointed [)rocess. 



Orimida is a bright red -brown species, the median lines lost, but 

 the s. t. line prominent and marked with white scales. The extreme 

 base and the costal region of the primaries are marked with white. 

 The reniform is filled with white, and the narrow, long, oblique 

 orbicular is ringed with white. Altogether it is a very distinctly 

 marked as well as rather a rare species. The harpes are moderate 

 in length and narrow to a rather small oblique tip which is fringed 

 at the edge with spinules. The hook or clasper is small and very 

 stout, the oblique ridge has a rather long pointed tooth at about the 

 middle and it extends beyond the margin in a short point a little 

 before the tip. 



Gausapata comes in here ; but the species is known to me by the 

 type only, which is in the American Museum of Natural History. 

 Mr. Grote speaks of it as allied lo ferrealU, but it is of a dull purple 

 red, the primaries with a gray bloom. The median lines are indis- 

 tinct and the reniform is a rusty yellow stain. There is no difficulty 

 in recognizing this species, which is from California. 



TRANS. AM. ENT. SOC, XXVII. AUGUST, 1900. 



