THE MOUNT DESERT EEGION 147 



Trogus Panzer 



T. OBsiDiANATOR Brulle. Salisbury Cove, July 17-24. Para- 

 sitic on Papilio polyxenes. 



T. (PsiLOMASTix) FULviPEs Cress. Common, July 8-24. 



T. (PsiLOMASTix) vuLPiNus Grav. {exesorius Brull.). Salis- 

 bury Cove, July 14-17, Parasitic on Papilio polyxenes and 

 turnus. 



MYERSiroAE 



Myersia Viereck 



M. JOHNsoNi Cush. S. W. Harbor; Long Pond, July 11-16. 



TRIGONALroAE 

 Trigonalys Westwood 



T. SULCATA Davis. Duck Brook, July 30, 1919. 



EVANHDAE 

 Gasteruption Latreille 



G. MONTANUS var. iNCERTUS Crcss. S. W. Harbor; Bar Har- 

 bor; Salisbury Cove, July 10-29. 

 G. TARSATORius Say. S. W. Harbor, July 28. 



Odontaulacus Kieffer 



0. ABDOMiNALis Crcss. Bar Harbor; S. W. Harbor, June 13- 

 July 29. 



Cynipidae. Gall wasps 



Andricus Hartig (Callirhytis auct.) 



A. OPERATOR form OPERATOR 0. S. Acom gall. Robinson Mt., 

 Sept. 7. The gall is an oval larval cell between the nut and 

 cup of the acorn. On the scrub oak {Quercus ilicifolia). 

 The agamic generation. 



A. TUBEROsus Bass. Robinson Mt. Irregular wood galls on 

 the scrub oak. 



A. sciTULUs Bass. Salisbury Cove; Bar Harbor. Irregular 

 wood terminal swellings on the red oak {Quercus rubra). 



A. siNGULARis Bass. 'Small oak apple gall.' Bar Harbor; 

 Salisbury Cove, Aug. On leaves of the red oak. 



Amphibolips Keinhard 



A. iNANis 0. S. Empty oak gall. Bar Harbor, Aug. 6. On 

 the leaves of the red oak. 



