The following" table may be of some use in separating the species: 

 ? I. Exterior margin of primaries excavate between the veins. 



A. Color entirely smoky, or blackish brown aiigusii G. & R. 



B. Color yellowish brown, or paler. 



a. Discal spots faint or absent, size medium. 



1. Color yellow-brown ministra Dm. 



2. Color pale testaceous californica Riley. 



d. Discal spots distinct, size large. 



1. A distinct fulvous costal shade drexelli Hy. Edw. 



2. Wings nearly unicolorous, tawny reddish brown . . major G. & R. 

 ^ 2. Exterior margin of primaries entire. 



A. Discal spots not large, inconspicuous, or absent. 



a. Fore wings with more or less of a purplish or lilac color. 



1. Fore wings dull whitish lilac, more or less covered with cinnamon- 



brown scales palmii Bent. 



2. Fore wings dark brown, with a purplish Mush . . . floi'ldana Graef. 

 d. Fore wings without such color. 



1. THoracic patch ocherous Diodesta Beut- 



2. Thoracic patch dark brown. 



Fore wings dark reddisli Ijrown, lines and fringe concolorous. 



integerrima G. & R. 

 Fore wings luteous tawny, the lines and fringe not concolorous. 



contracta Walk. 



B. Discal spots, especially the outer, ver\' large and distinct. 



a. Thoracic patch tawny brown perspicaa G. & R. 



d. Thoracic patch as pale, or even paler than the rest of thorax. 



robnsta Sttk. 



I subjoin also the table for the larva given by Mr. Beutenmiiller 

 in the "Canadian Entomologist," (vol. xx, p. 135) ha\'ing added 

 two species. The larvae of D. modesta and D. robusta are still un- 

 known, while concerning that oi D. caIifor7iica nothing has yet been 

 published. 



\ I. Stripes narrower than the intervening spaces. 



Body black, stripes sulphur-yellow ministra. 



Body black, stripes citron-yellow, confluent posteriorly .... drexelii. 



Body black, stripes very hne, pale yellow angiisii. 



Body black, stripes yellow, head and plates light red palmii. 



Body black, stripes white, usually partly obsolete or absent . integerrima. 



\ 2. Stripes as wide or wider than the intervening spaces. 



Body black or red, stripes bright lemon-yellow perspicua. 



Body black, stripes creamy white contracta. 



Body black, stripes yellowish, head and anal plates red .... floridana. 



Body black; stripes broken into spots, bright yellow or white; head and anal 



plates red major. 



