THE MOUNT DESERT REGION 185 



D. hirticollis Kby. (15194). Eden Aug. 10. Scarce. 



I), proxima Kby. (15198). Little Round Pond, June 18; 



Tarn, July 28; Witches Hole, June 7-Sept. 11. Xot 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. 

 1). uufescexs Lac. (15201). New Mill Pond, July 25. Upper 



Breakneck Pond, July 29. Shows great variation in size 



and in color. Not common. 

 1). piscatrix Lac. (15202). Witches Hole, July 15; The 



Tarn, July 28. Shows considerable color variation. 

 D. subtilis var. fulgens Lee. (15203). If this variety is 



valid, there is a record of Bar Harbor, July 24. 

 D. subtilis Kunze. (15203). A single specimen taken at 



Beaver Dam Pond flying, Sept. 24, '37; Bar Harbor, July 



20-29. 

 D. rugosa Lec. (15206). The Tarn mating in large numbers 



on Pontederia cordata, July 28, '37. This is the only record 



on the Island. No variation shown. 

 D. distixcta Lec. (15211). Bar Harbor, June 11. 

 D. pusilla Say (15213). Witches Hole, June 13. 

 I), metallica Alirens ( 15215) . Bar Harbor, June 11. 

 1). emarginata Kby. (15216). Penikese on wild mustard, 



June 4; Upper Hadlock Pond, June 10; Station F244, June 



18. F382. 

 I), flavipes Kirby (15217). But one specimen taken. Sta- 

 tion F332. 

 D. rufa Say (15218). Rhodora Meadow Hying, May 25; 



Witches Hole, June 13 ; Half Moon Pond sweeping the shore 



bushes, June 18. 

 D. liebecki Schffr. (20163). Witches Hole mating, July 28 



and Upper Breakneck Pond, Aug. 3. In white water lily 



flowers both places. Show no variation. Scarce. 



