THE MOUNT DESERT REGION 459 



N. (paropheltes) tarsata (Briscbke). Bar Harbor, Aug. 



29-Oct. 1 (Br.). 

 N sp. Aug. 18 (Br.). 



Grypocentrus Ruthe 



G. sp. Pars, sawfly on blackberry, Oct. 2 (Br.). 



Polyblastus Hartig 



P. fulvilinealis Hall. Witch Hole Pond, Aug. 18. 



P. pedalis (Cress.). Pars, on Croesus latitarsus (Br.). Echo 



Lake ; S. W. Harbor, June 17-July 20. 

 P. tibialis (Cress.). S. W. Harbor, July 20. 



Labroctonus Forster 



L. sp. Bar Harbor; Green Mt., July 25-Aug. 18. 

 L. n.sp. Bar Harbor, Aug. 23 (Br.). In U.S.N.M. 



Scopiorus Forster 



S. analis (Cress.). S. W. Harbor; Long Pond, July 12-24. 

 S. subcrassus (Cress.). S. W. Harbor, June 25. 



Erromenus Holmgren 



E. dimidiatus (Cress.). Narrows; Bar Harbor; Salisbury 



Cove, June 9-July 23. 

 E. sp. near crassus (Cress.). Bred from sawfly material, 



May 26 (Br.). 



Tryphon Fallen 



T. davisi Tow. Bar Harbor, July 2 (Br.). 



Cosmoconus Forster 



( J. canadensis ( Prov. ) . Salisbury Cove ; N. E. Harbor : Green 

 Mt., July 19-Aug. 23. 



Exenterus Hartig 



E. affinis Roh. On pine, July 29. In U.S.N.M. 

 E. canadensis Prov. Reared July 29 (Br.). 



