362 APPENDIX. 



joints yellowish; Ihorax with a double, brown, middle 

 line, attenuated and abbreviated behind, and a brown ap- 

 proximate line on each side abbreviated before ; a small 

 fascicle of hairs beneath each wing, and a dusky spot over 

 the insertion of each foot ; wings immaculate ; poisers yel- 

 lowish-white ; abdomen slender at base, gradually dilating 

 towards the tip, dull-yellowish, hairy; incisures and tip 

 dusky ; feet dull-yellowish, towards their tips dusky. 



Length of the body three twentieths of an inch. 



I obtained this species on the rocky coast of Lake 

 Superior, in a thicket of small bushes. The nervures of 

 the wings correspond with those of Asindulum punc- 

 latum, Latr., excepting that the second nervure is not 

 at all connected with the first nervure, but curves down- 

 ward at tip and enters the intermediate cellule before 

 the middle, and the ultimate and penultimate abbreviated 

 nervures are distinct; it is a much smaller species than the 

 fasciata, nob. the nervures of which agree better with the 

 preceding species, but its connecting nervure from the se- 

 cond nervure enters the intermediate cellule at the middle. 



3. S. hirticollis. Yellowish-white ; thorax hairy ; tergum 

 black, with pale yellowish bands. 



Inhabits North-west Territory. 



Head black ; hypostom,a, m,outh and trophi whitish ; 

 antennx black-brown, the four basal joints yellow, with a 

 dark brown spot above on the third and fourth ; thorax 

 with rather numerous, somewhat long, black hairs ; three di- 

 lated, brownish-livid lines, the intermediate one abbreviated 

 and attenuated behind, and the lateral ones attenuated be- 

 fore ; wings a little dusky, the intermediate cellule appear- 

 ing to the eye like a small, black spot ; poisers whitish ; 

 pleura with a brownish-livid spot over the intermediate 

 and posterior feet; feet dusky towards the tip, the coxae 



