THE MOUNT DESERT REGION 191 



G. cavicollis (Lec.) (15746). Feeds on the leaves of wild 

 cherry. Penikese, June-July beating. 



G. nymphaeae (Linn.) (15751). On the leaves of Nymphaeae 

 advena in the ponds, July and Aug. 



O. decora (Say) (15753). Found on willow generally. Peni- 

 kese sweeping, June 1; S. W. Harbor; Bar Harbor, June 

 27-Aug. 18; Station F94. 



G. kalmiae Fall (20194). Prefers the leaves of laurel. Peni- 

 kese, May 29 on wild mustard. Green Mt. summit laurel, 

 Aug. 8; Long Pond; Bar Harbor, July 17- Aug. 18. 



G. vaccinii Fall (20195). N. E. end of Long Pond, sweep- 

 ing ferns. 



G. spiraeae Fall (20196). Feeds upon Spiraea. Station 

 F177. Abundant in Rhodora Meadow, May 24, '38. 



G. alni Fall (20197). Feeds on the leaves of alder. S. \Y. 

 Harbor; Eden, June 27-July 16; Green Mt. Summit, Aug. 5. 



G. perplexa Fall (20198). Penikese, June 20; Green Mt. 

 Summit, Aug. 5 ; Swamp opposite Schooner Head, Sept. 22. 



G. sp. Station F308. 



G. sp. Station F308. 



G. sp. Station F308. This and the two above are all 

 different. 



Erynephala Blake 



E. maritima (Lec.) (Monoxia puncticollis Horn) part; not 

 (Say) (15755). Salt marsh at Narrows on Solidago mari- 

 tima Aug. 3-Sept. 12. 



Diabrotica Chevrolet 



D. duodecimpuxctata (Fab.) (15769). Adults found on the 

 foliage of cucumber and allied plants while the larvae feed 

 on the roots of grasses and corn. S. W. Harbor on rose, 

 July 13; Sargent Mt. Pond 1000 ft., Sept. 3; Section 15, 

 Sept. 6. 



D. vittata (Fab.) (15782). The Striped Cucumber Beetle 

 which as its name implies lives on cucumbers, melons, etc. 



D. melanocephala (vittata auct. not Fab. 1775). Penikese 

 on lilac, June 6; Stations F39 and F128. 



