HENDECASTEMA. — PLATYNOTii. 5 



of the hind wings. Fore wings pale straw-colour ; the costa arched somewhat abruptly at the 

 base, where there is a strong chestnut-brown shade : a wedge-shaped spot of a similar colour 

 points outwards from the costa before the middle towards the anal angle ; a narrow chestnut- 

 brown shade extends vertically downwards from the apex halfway along the apical margin, 

 the v/ing thence being rounded off obliquely to the dorsal margin: cilia very pale straw- 

 colour. Hind wings yellowish white, with a chestnut-brown shade at the apex. Legs pale 

 straw-colour; the first pair of tarsi chestnut-brown above. The female slightly larger than 

 the male ; fore wings unicolorous ochreous chestnut, hind wings yellowish white : antennae 

 simple. 3 (J, 1 ? . Expanse of wings J* 30 millims., $ 33 millims. 



Var. adumlDranum. 



In this var. ^J the chestnut-coloured wedge-shaped mark on the costa is much occupied 

 by dark fuscous scales, and it blends into a chestnut shade, which is continued along the costa 

 to the apex, and downward through the wing to the dorsal margin beyond the middle, forming 

 a sort of large irregular triangle, from the inner edge of which a slight projection extends 

 towards the base of the wing along the fold. There is an oblique line of faint fuscous scales 

 halfway between the costal wedge-shaped mark and the apex, reaching downwards towards 

 the anal angle. The space between the thorax and the middle shade is of a more ochreous 

 tint than the space beyond it above the anal angle, which is very pale straw-colour. The 

 female has the fore wings darker than in the typical form, but nearly unicolorous ; a paler 

 oblique fascia, scarcely perceptible beyond the middle ; the space above the anal angle also 

 pale. 1 c?j 1 ? . Expanse of wings J" 30 millims., ? 33 millims. 



Both varieties of this species occur in the month of August, on the western slopes of 

 Mount Shasta, California, at an elevation of about 6000 feet, among thickets of " Man- 

 zanita," Arctostaphylos glauca (Lindl.), on which I have little doubt the larva feeds. In a 

 considerable series I have met with no varieties intermediate between the two forms above 

 described ; but it would be at least premature to consider them distinct species. 



PLATYITOTA, Clem. 



Platynota rostrana. (Plate LXII. fig. 1.) 



Teras rostrana, Wallc. Oat. Lep. Het. xxviii. p. 290. 

 Teras restitutana, WalTc. Cat. Lep. Het. xxviii. p. 292. 

 Teras connexana, Walh. Cat. Lep. Het. xxviii. p. 293. 



Palpi very long, projecting fully three times the length of the head beyond it; the second 

 joint nearly three times as long as the apical joint, slightly enlarged towards its base, tapering 

 forward : antennae simple. Fore wings — with the costa abruptly arched near the base, straight 

 beyond, the apex not rounded; apical margin straight, not oblique — tawny fawn-colour, the 

 whole surface streaked with very minute detached streaks of tawny-fuscous scales in broken 



