Oecanthus pini Beutenmuller. Since O. pini is known to range from Massachusetts west to Ohio and south to North Carolina, it is not surprising to find it in extreme southern Ontario. The specimens here recorded were found on white pine (Pinus strobus L.), red pine (Pinus resinosa Sol. and jack pine (Pinus Banksiana Lam.) in an area devoted to reforestation.

Phytodecta Kby. is represented in the Western Hemisphere by four or five species which occur in Canada and in northern United States. The species are poorly represented in collections, and they have been confused with European species by most authors. They have been reviewed by Schaeffer (1924, Jour. New York Ent. Soc., XXXII, 138-140), but because the antennal and color characters used by Schaeffer fail and because the food plant records are incorrect, another synopsis seems desirable.

The species discussed below have been received from the United States National Museum, the American Museum of Natural History, Cambridge Museum of Comparative Zoology, Cornell University, Michigan State College, British Museum of Natural History, and Deutsches Entomologisches Institute, or are in the Snow Entomological Collection at the University of Kansas. The writer is very grateful to these institutions for the privilege of studying this material. These species will be keyed and figured in a forthcoming revision of the New World Plecia.