THE MOUNT DESERT REGION 229 



Drepana Schrank 



D. ARCUATA Walk. (4020). S. W. Harbor; Corfield, June 2- 

 July 16. The larva is solitary and forms a web. It feeds 

 on birch and alder. This species is dimorphic and this is 

 the summer form. 



D. ARCUATA form GENicuLA Grt. (4020). N. E. Harbor, July 

 19 (Minot) ; Corfield. This is the spring form. 



D. BiLiNEATA Pack. (4021). N. E. Harbor (Minot); Corfield 

 and Penikese at light, May 28-July 19. The larva feeds 

 on birch. 



Geometridae 



Bbephos Zinck 



B. iNFANs Moesch. (4023). Bar Harbor, April 12-May 1 

 (Br.). This northern form is not common here. The larvae 

 feed upon white birch. 



AlsophiI/A Hbn. 



A. poMETARiA Harr. (4026). Fall Cancer Worm. A serious 

 pest on a large number of plants and shrubs. The females 

 are wingless. Bar Harbor, Nov. 7-22 (Br.). 



Nemoeia Hiibner 



N. MiMOSARiA Gn, (4048). Penikese at light; Bar Harbor, 



June 7-19 (Br.). 

 N. RUBRiFRONTARiA Pack. (4049). Bar Harbor; Penikese at 



light, June 18-25. 



Synchi>ora Guenee 



S. AERATA Fab. (4070). Near Bar Harbor (Burton) ; Bar Har- 

 bor (Br.), July 1-4. The larva feeds on blackberry and 

 raspberry. 



S. RUBRIFRONTARIA Pck. (4074). Bar Harbor, June 30-July 7 

 (Br.). 



Chlobissa Stephens 



C. suBCROCEATA Wlk. (4088). Ehodora Meadow, June 6 (Br.). 

 Bare. 



