51 



among them, or at least very near these varieties. The females are 

 lighter than the males. Cretidactylas varies but slightly; the males 

 are lighter than the females. 



Lioptilus kellicottii was described by Prof. Chas. Fish in 

 the Canadian Entomologist, xiii., 141. I gave an account of its 

 habits in the same, xii., 105. I repeat a few particulars since its 

 history is so totally different from that- of any other species referred 

 to in this paper. 



In August, the larvae may be found boring the ends of the stems 

 and branches of different species of golden-rod, — it appears to prefer 

 Solidago altissima. In September they leave the same and bore into the 

 pith of the stem just above the ground; they work down into the 

 roots where they pass the winter. In May it returns to the place 

 of entrance clearing the way for final escape in the moth state. The 

 pupa skin is left in the burrow, i. e., the pupa does not worm its 

 way out before hatching. The moths appear from the 1st to the 

 15th of June. 



Aciptilus montanus was referred to in the papers from the 

 Can. Ent. mentioned above; it has been described by Walsingham in 

 Pterophoridae of California and Oregon, page 59. 



The larva feeds upon different species of Solidago. The first 

 examples were noticed this year on May 30th. At this time they were 

 found only on the under side of the leaves, later they occur on the 

 upper as well. As a rule, they lie close to and parallel with the 

 mid-vein. At least while young they eat out the parenchyma leav- 

 ing the epidermis. 



May 30th, the larvae were .1 of an inch and less in length; en- 

 tirely white except claws and mandibles. The body is not flattened 

 at this stage. The first ring is broad and the head may be well with- 

 drawn into it. The tubercular hairs are spined, plainly seen un- 

 der a moderate magnifying power. 



June 3d; the largest had evidently moulted, length then .2 of 

 an inch; pale green, eighth and ninth rings yellow. Lateral tufts 

 more conspicuous. Dorsal line faint. Subsequent changes not 

 noted until full-grown larva was described the latter part of June. 

 Length .35 to .4 of an inch. Pale pea-green, head paler, dorsal stripe 

 \ 



