379 



some sulphureodactylus 



Not such insects 40 



40. Spot before cleft on primaries more or less conspicuously continued in 



an oblique shade toward costa ■'I 



Spot usually rounded, sometimes continued into a shade in first lobe, 

 sometimes doubled, and sometimes included in a transverse dash or 

 lacking ■ • • • 42 



41. Frinpes of primaries uniformly tawny some occidentalis 



Fringes more grayish with white hairs included some matbcivianus 



42. Fringes conspicuously darker at apices of lobes of primaries 43 



Fringes not conspicuously darker; if somewhat darker, with the tran- 

 sition very gradual 44 



43. Dot at base of cleft on primaries "'■''-^ 



Dot well before cleft some helmnthi 



44. Fringes in cleft of primaries dark throughout, in contrast to wing 45 



Fringes concolorous at least toward base of cleft, darker than wing 

 apically in some species 47 



45. With whitish scales in fringes of primaries near apices of lobes 46 



Without pale scales; fringes uniformly dark f'hocbus 



46. Head evenly pale gray some anon 



With a light band between antennae triton 



47. Expanse over 30 mm. (rarely dwarfed). Wings brownish 48 



Expanse less than 30 mm. or wings not conspicuously brownish 49 



48. Terminal dots inconspicuous. Discal dot usually lacking and never 



more than vaguely indicated. Known only from Cal grandis 



Discal and tenninal dots usually conspicuous but often at least partly 

 lacking. A dark basal dash usually present. Discal dot sometimes 

 preceded by another nearer to inner margin which may be the more 

 conspicuous. Known only from Fla. to Tex. and Ariz balanotcs 



49. With a dark dot near base of cleft 50 



This dot usually absent, in some cases vaguely indicated 55 



50. Discal dot before base of cleft or terminal dots of second lobe lacking 51 

 Discal dot contiguous to base of cleft 54 



51. Terminal dots on second lobe well marked vcnapunctus 



Terminal dots rarely incompletely indicated, usually completely lacking 52 



52. Primaries pale, whitish to luteous, secondaries more grayish. A fine 



dark point on inner margin of first lobe before apex lutcoliis 



This dot lacking 53 



53. Wings tawny, secondaries sometimes tinged with gray.... some occidentalis 

 Primaries variable, usually with a visibly darker shade from base into 

 first lobe. Secondaries grayish palcaccus 



54. Primaries usually more or less tinged with clear yellow. Usually 

 without terminal dots but sometimes with one in apex of second lobe 



strauiincus 



Primaries with no trace of clear yellow. Terminal spots on both lobes 

 more or less evident, sometimes conspicuous kellicottii 



