THE MOUNT DESERT EEGION 151 



FoRMicroAE. Ants 

 Cremastogaster Lund 



C. LiNEOLATA Sav. Eobinsoii Mt., Sept. 7. On sap from gall- 

 infested acorns of the scrub oak ; Cadillac Cliffs and Salis- 

 bury Cove, Sept. 11 and 12, males and females swarming. 



Mybmica Latreille 



M. scABRiNODis var. FRACTicoRNis Emcrj. S. W. Harbor; 

 Green Mt. ; Long Pond, July 11-Aug. 22. 



M. SCABRINODIS var. SABULATES Meiu. 'Mt. Desert,' July 30 

 (McAtee). 



M. SCABRINODIS scHENCKi var. EMERYANA Forcl. S. W. Har- 

 bor ; Witch Hole Pond, Sept. 6-11. 



Leptothorax Mayr 



L. ACERVORUM CANADENSIS Prov. S. W. Harbor, July 11. 

 L. cuRvispiNosus AMBiGuus Emery. 'Mt. Desert,' July 30 

 (McAtee). 



DOLICHODERUS Lund 



D. PLAGiATus var. iNORNATus Wheeler. S. W. Harbor, Sept. 6. 

 D. PLAGIATUS Emery var. Break Neck Pond, Sept. 8. 



Tapinoma Foerster 



T. SESSILE Say. S. W. Harbor, July 11-Sept. 6. 



Lasius Fabricius 



L. NIGER var. AMERiCANus Emery. 'Mt. Desert,' July 30 (Mc- 

 Atee). 



L. NIGER var. siTKAENsis Pcrgaudc. Long Pond ; Bar Harbor, 

 June 27-July 17. 



L. UMBRATus MixTus var. APHiDicoLA Walsh. S. W. Harbor; 

 Green Mt., July 15-25. 



L. UMBRATUS suBUMBRATus Vicr. Bar Harbor, Aug. 16. 



Formica Latreille 



F. sANGuiNEA ASERVA Forcl. Bar Harbor; S. W. Harbor; 



Green Mt., June 21-July 25. 

 F. FuscA Linn. Common, June-Sept. This species makes 



large mounds. Near the foot of Western Mt. ('Gilly's 



field') was a mound that measured 7 by 11 feet, with an 



average height of 2 feet. 



