824 JOHN B. SMITH. 



6. — Fringes unusually long, dark outer border of secondaries defined 7. 



Fringes normal ; dark outer border of secondaries indefinite 8. 



7. — Terminal region of primaries darker, the lines narrow, ordinary spots small. 



Group TERMINALIS. 

 Terminal region of primaries not darker; maculation normal. 



Group LEVIS. 

 8. — Maculation and color diverse; contains all species not definitely referable 



elsewhere Group HOMOGENA. 



9. — S. t. line preceded by a series of black, sagittate dashes set in a pale areole. 



Group CHANDLERI. 



S. t. line preceded by an even dark shade; no dashes Group CIBALIS. 



Primaries with a longitudinal black shade from base or from reniform to 

 outer margin Group ATRICOLLARIS. 



Oncocnemls aterrima Grote is an Heliothid allied to Melieleptria. 



Group HAYESI. 

 Secondaries with base yellow, outer margin broadly black. 



Three species are referable to this group, very similar in appear- 

 ance at first sight, and yet abundantly distinct and easily separable. 

 The yellow secondaries of course form the most striking characteristic, 

 but the resemblance otherwise is close, the genitalia of the male 

 being often the same in pattern though differing in detail. 



Hayed differs at once from all the others by lacking the claviform. 

 The ground color is dull luteous brown, paler than either of the 

 other species, the transverse lines distinct, the t. p. line outwardly 

 denticulate on the veins, s. t. line preceded by a distinct dusky shade. 



Dayi has the claviform distinct, the transverse lines easily trace- 

 able, t. p. line even. The ordinary spots are well defined, moderate 

 in size, the orbicular round, the reniform with a pale shade beyond to 

 the t. p. line, which is characteristic. On the underside the terminal 

 space of primaries is whitish or pale powdered — a peculiarity of this 

 species, the black band on the other species extending to the margin. 



Mirificalis is usually a trifle smaller than the other species. The 

 claviform is distinct, a black line connecting it with base. The t. a. 

 line is marked only on costa. The orbicular, unlike the other species, 

 is elongate, oval, not round ; the reniform is small, narrow, neatly 

 defined. The other characters will be given with the s})ecies. 



In tal)ular form the differences are as follows: 



Orbicular round ; reniform large. 



T. p. line single denticulate on veins; claviform wanting liayef^i. 



T. p. line geminate, even; claviform present daj'i. 



Orbicular elongate, oval ; reniform small iiiirififsilis. 



