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similar areas throughout the region. The dominant tree is arbor- 

 vitae, with much balsam, yew, red maple, and yellow and white 

 birches at slightly higher levels. Among the shrubs, alder is 

 dominant. The hollows are densely carpeted with sphagnum, 

 and the stream flowing through the swamp is partly choked in 

 places with Chrysosplenium. On the slightly elevated hummocks 

 occur the numerous remnants of characteristic spring flowers, 

 notably twinflower, goldthread, star flower, bunchberry, and 

 sarsaparilla. The crane-flies were swept in great numbers from 

 the rank growth of yew, balsam, and herbage. Species in the 

 accompanying list that were taken in the above swamp are indi- 

 cated by ''Swamp." 



In places there are very old bogs, where a dense growth of 

 larch, balsam, and spruce forms the bulk of the vegetation. 

 There is much sphagnum in the hollows. Species from situations 

 such as this are indicated by the word ''Bog." 



Along the Beech Hill Road, on the eastern foot of Beech Moun- 

 tain, is a broad rocky gorge that produced certain crane-flies 

 that were not found elsewhere. The forest cover of the gorge is 

 almost entirely yellow birch, with smaller balsams and much yew. 

 A small stream flows through the gorge, and most of the crane- 

 flies taken were swept from the vegetation along this stream or 

 from the rocky cliffs nearby. Species from this locality are indi- 

 cated by the word "Gorge." 



A small swale lying between Norwood Cove and the village 

 center of Southwest Harbor yielded a few species that were found 

 nowhere else. A small sluggish stream flows through the swampy 

 area, with a few alders and dense growths of Impatiens hiflora. 

 Polygonum sagittatum, Scirpus sp.. Car ex sp., etc. Species from 

 this situation are indicated by the word "Swale." 



Rhipidia (Rhipidia) maculata Meig. Generally distributed 

 along the trails, in swamps and bogs, and on the slopes of Western 

 Mountain to 970 feet, August 26-September 8. 



Discohola argus (Say). Very common and widely distributed 

 throughout the coniferous belt, ascending to the wooded summit 

 of Western Mountain, August 26-September 12. 



Geranomyia (Geranomyia) canadensis (Westw.). One, shores 

 of Echo Lake, September 4. 



Dicranomyia immodesta 0. S. Common in the swamps and in 

 wet places along the trails, September 1-8. 



