THE CANADIAN ENTOMOLOGIST. 273 



primaries. The prominent thoracic tuft and vesiture heavily scaled in 

 purple-brown and yellow. Abdomen the same silken shade of pale fawn as 

 the secondaries. Basal area of primaries small and of the ground colour, 

 the outlying area to the t. a. line dull purple ; median space entirely of the 

 yellow ground colour, and contrasting at the t. p. line, as the remainder of 

 the wing is quite dark. The median shade is a fine brown line extending 

 from the middle of the inner margin to the lower end of reniform, whence 

 it angles and crosses the cell to the costa in an unusually irregular course. 

 The t. p. line is nearly straight, geminate, the inner a fine brown thread, 

 the outer blended and lost in the deep purple of the subterminal space. 

 This area is glistening, violet-purple, and adds greatly to the attractiveness 

 of the insect. The very irreguhr s. t. line borders a rather wide terminal 

 space of the dull purple that holds inside the median field. The ordinary 

 spots are small ; the orbicular and claviform are three, almost equal, 

 superimposed spots, the former a pure white round dot, the latter double, 

 the upper yellowish and the lower a pure white oval dot. Reniform 

 broken, the commingling spots yellow, except the lower inner one, which 

 is white. There exists the customary dash of the ground colour at the 

 apex. Fringes deep purple and glistening. The secondaries scarcely 

 show any terminal clouding, and have concolorous fringes. Expanse, 

 31 mm.j 1.25 in. The type is a female. Superficially it approaches 

 cataphracta somewhat, though the straighter t. p. line, the small white- 

 marked spots and the lighter secondaries easily separate it. Numerous 

 cataphracta examples bred in ColUnsonia show no change from the typical 

 form, and appear nearly a month later. ' 



Astuta larvje were first observed July loth, being then about half 

 grown, and having emerged from the hibernated ova presumably about the 

 first of June. The stems are entered three or four inches above, and the 

 burrow is made downward to the root, which has been reached by this 

 date. An inflate made July 20th shows a larva in the penultimate stage. 

 Head, 2.2 mm. wide; normal, shining-yellow, without side line or shade ; 

 ocelli and mandibles blackened. Thoracic shield as large as head, black 

 at sides. The longitudinal lines are barely seen, none of which cross the 

 darkened area shown on the first four abdominal joints. The tubercles, 

 though small, are black and easily definable. On joint ten, IV is low 

 down, with no accessory, and is bare of setae. On joints eleven and 

 twelve the plates are normal. Length, 39 mm. 



Pupation occurs in the ground, and the date of the single emergence 

 is Sept. 1 2th. The pupa is light brown and active, and offers no feature 

 of individuality. 



