Tkiciioktiiosia spinosa sp. nov. (I'latc 1, tig. i8.) 



9 . Eyes hairy ; all tibiae strongly spined ; thoracic vestiture composed of 

 loose feathery scales ; front and thorax gray, collar rather yellowish ; primaries 

 purplish-brown, sprinkled with ochreous ; with the exception of the subterminal 

 line, all lines obscure ; t. a. line geminate, black, outcurved in the interspaces ; 

 t. p. line geminate, black, best recognizable below the reniform where it forms 

 two scallops, opposite the cell its course may be traced by venular black dots ; 

 s. t. line pale ochreous, very rigid, arising from an apical pale shade and 

 proceeding straight to the anal angle; orbicular and reniform prominent, out- 

 lined in ochreous and tilled with deep purple-brown, former round, latter large, 

 upright, open at top and bottom ; a terminal row of black points ; fringes ochreous 

 mixed with purple-brown, with pale basal line. Secondaries deep smoky with 

 ochreous fringes and traces of a dark terminal row of dots. Beneath pale 

 fuscous with a sligiit purplish reflection ; both wings with dark discal spot, in- 

 distinct postmedian line, terminal black spots and pale fringe line. E.xpansc, 

 30 nun. 



Habitat: — raliiicrlcc. Arizona (C. Biedcniian). 2 2 9. Type, 

 Coll. Barnes. 



Differs from the genus Tricliorthosia as defined by Hamjjson. in 

 that all the tibiae are spined, not merely the mid and hind tibiae, and 

 that the thoracic clothing is composed of scales and not hair ; since, 

 however, the species resembles parallcla Grt. in general habitus, par- 

 ticularly in the rigid subterminal line, we prefer to place it in this 

 genus rather than create a new one. The size and shape of orbicular 

 and reniform readily distinguish it from parallcla. Both specimens 

 are rather worn and it is possible that in frcsli specimens the t. a. and 

 t. p. lines are more clearly to be seen. 



ScoTOGRAMMA NEVADA sp. nov. (Plate I. figs. 12, 13.) 



Head and thorax gray, sprinkled heavily with black scales ; collar with- 

 out banding ; primaries deep blackish gray, powdered with white, maculation 

 obscure ; t. a. line black, geminate, only visible on costal and inner margins ; t. p. 

 line often lacking, sometimes visible in lower half of wing as a crenulate black 

 line, parallel to outer margin ; s. t. line white, slightly irregular but forming no 

 W mark on veins 2 and 3, bordered inwardly with small brownish dashes, which 

 are often obsolete; claviform large, distinct, outlined in black, rather broad 

 and blunt ; orbicular variable in shape, generally oval, outlined in black and 

 with a dark central spot, reniform large, at times prominent, at times obscured 

 by dark powderings. with black margin, lower portion clouded w'ith dark gray ; 

 beyond reniform and below it in median area is often considerable white scal- 

 ing; a terminal row of black lunules sometimes very plain, often obscure; 

 fringes dark, slightly checkered with white. Secondaries pure white in $ 

 with a fine smoky terminal line and traces of a postmedian line, marked by dots 

 on the veins; these very slightly outlined with dark scaling; in 9 smoky-brown 



