386 BIOLOGICAL SURVEY OF 



Taxonus Hartig 



T. NiGRisoMus Nort. S. W. Harbor, July 11. The larva feeds 



on dock (Riimex). 

 T. UNiciNCTus Nort. Green Mt. ; Bar Harbor; Echo Lake, 



June 15-Jnly 25. 



Strongylogaster Dahlbom 



S. TACITUS Say. Upper Hadlock Pond, June 10. 



Z. soRicuLATUs Cressou. Bar Harbor, June 3, 1935 (Br.). 



Trichiocampus Hartig 



T. GREGARius Dyar. Bar Harbor, June (Br.). 



T. IRREGULARIS Dyar. Echo Lake, June 17-July 17. 



Hemichroa Stephens 



H. AMERICANA Prov. Seal Cove, June 20 (Sanford). 



Pontania Costa 



P. POMUM Walsh. Willow apple gall. Bar Harbor ; Salisbury 

 Cove (Sanford). The larvae form galls on the leaves of 

 willow. 



P. pisuM Walsh. S. W. Harbor, July 11. The larvae form 

 subsphaerical galls on the under side of the leaves of willow. 



P. sp. S. W. Harbor, July 11. 



Pteronidea Roliwer 



P. AMELANCHERiDis Rohwer. Bar Harbor, June 12 (Br.). 



P. MENDicAs Walsh. S. W. Harbor, Sept. 5 (Alexander). 



P. POPULi Marlatt. May ; bred from poplar (Br.) . 



P. RiBEsii Scop. Bar Harbor, August; on currants (Br.). 



P. siMiLARis Nort. S. W. Harbor, July 11. 



P. TRICOLOR Marl. Bar Harbor, July 27. 



Croesus Leach 



C. LATiTARSus Nort. Bar Harbor ; Long Pond ; Narrows, June 

 15-Aug. 13. The larva feeds on birch. 



Nematxjs Panzer 



N. ODORATus Dyar. Bar Harbor, June 14 (Br.). 



