154 BIOLOGICAL SURVEY OF 



S. DiscoiDEA Fab. (15116). The Hickory Borer. Bred from 



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

 S. coNCOLOR var. unicolor Felt & Jout. (15123a). This insect 



also infests poplar. Bred from stem gall on Populus tremu- 



l aides, June 10 (Br.). 



Oberea Mulsant 



0. PALLIDA Casey (15137). Near Bar Harbor (R. H. Burton) ; 

 Salisbury Cove, Aug. 11. 



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



0. BIMACULATA (Oliv.) var. AFFiNis Harris (15148). Breeds 

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

 ing at Eden Fair grounds, July 26; Bar Harbor, July 2 

 (Br.). 



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



Chrysomelidae. 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 Fabricius 



D. HiRTicoLLis Kby. (15194). The Donacia breeds in ponds 

 and so are taken on lily pads and the like. Also sweeping 

 along brooks or edges of ponds is productive. Look also 

 on early flowers such as wild mustard 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. 

 Eden, Aug. 10. Scarce. 



D. PROxiMA Kby. (15198). Little Round Pond, June 18; Tarn, 

 July 28 ; Witches Hole, June 7-Sept. 11. Not common. 



D. ciNCTicoRNis Newn. (15198a). Upper Breakneck Pond on 

 {Nymphaea advena), July 28-Aug. 3. Scarce. 



D. PALMATA Oliv. (15199). The Tarn one specimen, July 28; 

 Witches Hole, Aug. 6; much variation in color. 



D. RUFESCENs Lac. (15201). New Mill Pond, July 25. Upper 

 Breakneck Pond, July 29. Shows great variation in size 

 and in color. Not common. 



