THE CANADIAN ENTOMOLOGIST. 



wings are more or less washed with red on the basal third. The second 

 abdominal band alone appears on the ventral side ; in front of it below is 

 a yellow line. 



I have not seen the European asiliformis (bespifonnis, Br. Mus. Lists 

 viii., 14), but have carefully compared our species with the descriptions 

 of Stephens (Haust. vol. i, 139) and Walker, and find the closest agree- 

 ment, except perhaps in the coloration of the legs, and in size ; tricinda 

 is a little larger. Besides, Stephens says asiliformis is " occasionally 

 taken on poplars near London in June." 



I can not omit mentioning the very close mimicry of tricinda after 

 certain wasps ; it is so close that different persons to whom it was shown 

 when alive pronounced it a wasp, and this, too, after being cautioned that 

 a hasty conclusion might put reason to the hazard. This close mimicry 

 results from their form and color, in general hue, abdominal bands, 

 thoracic and head markings \ also by their motions and attitudes, the 

 buzzing of their wdngs, the alternate up and down strokes of their 

 antennae, the position of their wings at rest, their threatening attitude 

 when disturbed, etc. These are often sufficient to deceive even a prac- 

 ticed eye. 



Aegeria pini, n. s. 



When studying the larval liabits of Pinipestis Ziinmermani in 1878-9, 

 I met with the larva and pupa skins of two moths evidently different from 

 the pine pest, yet having quite similar larval habits. During the past sum- 

 mer I succeeded in getting the moth of one of them ; it is an Aegerian, 

 as I think, undescribed, but I would not venture upon describing it had I 

 only the imago ; but as I am able to give mainly its history, and having 

 done so much tramping and climbing for its sake that I have come to feel 

 a proprietary right, I undertake to name and describe it as new. As its 

 proposed name implies, the larva inhabits the Pine, boring under the bark 

 and into the superficial layers of the wood. From the wounds thus made 

 pitch exudes, which through the action of the larva and the warmth of the 

 sun forms hemispherical masses over its burrows ; in these masses the 

 pupa cells are finally prepared and the inactive stage passed. The larva 

 occurs more frequently than elsewhere just below a branch ; sometimes 

 about the border of a wound made by the axe or where a limb has been 

 wrenched off by the wind ; rarely in the axil of the branch. It appears 

 to attack larger trees than the Zimmerman's pine pest, and more fre- 



