98 BIOLOGICAL SURVEY OF 



Agabus Leacli 



A. OBTUSATUS (Say) (2543). All the species in this genus are 

 found in marshes and pools around the roots of semi-aquatic 

 plants or under stones in wet spots. Witches Hole Brook, 

 Aug. 14-28. 



A. GAGATEs Aube. (2580). S. W. Harbor; Bar Harbor, June 

 25-July 11. Also one taken in the spring on Green Mt. 

 summit. 



A. sp. Witches Hole Brook, Aug. 14. 



A. sp. In almost dry brook flowing into S. W. shore of Eagle 

 Lake, Aug. 15. 



Illybius Erichson 



I. STJBAENEUS Er. (2589). S. W. Harbor ice ponds, July 14. 



Pond at Nurseries, July 29. 

 I. ANGUSTioR (Gyll.) (2595). S. W. Harbor ice ponds, July 14. 

 L. BiGUTTULus (Gcrm.) (2598). Common in small ponds and 



pools from Aug. 1 to Sept. 



CoPTOTOMUs Say 



C. iNTEREOGATus (Fab.) (2610). Not common. Taken at New 

 Mill Pond in Aug. and at Station F186 in Sept. 



Ehantus Lac. 



E. BiNOTATus (Harr.) (2616). Two individuals taken in New 

 Mill Pond, July 21-34 indicating scarcity. 



COLYMBETES Clairville 



C. scuLPTiLis Harr. (2632). Pond near Bar Harbor, June 9, 



'27. 



