L84 BIOLOGICAL SURVEY OF 



S. calcarata Say (15113). The Poplar Borer. Blackened 

 scars on tlic limbs and trunk show where this insect has 

 been working. Penikese at light, Aug. 11. Bar Harbor, 

 Aug. 20. Not common. 



S. DISCOIDEA Feb. (15116). The Hickory Borer. Bred from 

 Hawthorn, July 12, '35 (Br.). 



S. concolor var. ctnicolor Felt & Jout. (15123a). This in- 

 sect also infests poplar. Reared from stem gall on Populus 

 tremuloides, June 10. 



Oberka Mulsant 



( ). pallida Casey (15137). Near Bar Harbor (K. H. Bur- 

 ton); Salisbury Cove, Aug. 11. 



0. myops Hald. (15138.1). On raspberry, June 1 (Br.). 



( ). bimaculata (Oliv.) var. affixis Harris (15148). Breeds 

 in the canes of raspberry and blackberry. Taken by sweep- 

 ing at Eden Pair Grounds, July 26; Bar Harbor, July 2. 



( ). ocellata Hald. (15152). One found in poplar (Br.) May 

 12. 



0. gracilis (Fab.) (15154). Bar Harbor, July 23 (Br.). 



ClIRYSOMELIDAE. The Leaf Beetles 



General beating and sweeping will yield large numbers but 

 as their interest is so tied to their food plants, it is better 

 and more fun to search for them there. 



Donacia FabriciuB 



The Donacia breed in ponds and so arc taken on lily pads 

 and the like. Also sweeping along brooks or edges of ponds 

 is productive. Look also on early Mowers such as wild mus- 

 tard if within 100 yds. of water. A species here is confined 

 to one or two ponds, probably due to the intervening- mountains 

 and dense woods. 



