166 THE CANADIAN ENTOMOLOGIST. occasionally either entirely wanting or existing as a continuation of the margin of the basal patch on primaries ; on the upper margin the shade appears to be constant, although sometimes obscured so as to appear a dull gray. Similar variations are observable in the abdomen, vermillion and white, red, black and white, and rarely dark brown and white (the color of the wings) ; and in the wings, which may be dark brown sprinkled slightly with gray, and opaque or dull black, and semi-transparent ; one specimen in my collection, with the primaries of the first and secondaries of the latter color, presented a curious appearance ; this was one of two taken from Ampelopsis quinquefolia, the other having both wings thin and silky, and nearly as black as Papilio asterias. The palpi usually agree with the body, as do the legs ; in this case both are dark red. Notwithstanding these differences and the wide range in size (4^3 to 7^ inches being the extremes of perfect moths in my possession), cecropia agrees so well in general appearance that, aside from the black variety mentioned above, a distinctly marked variety is a rarity, the nearest approach I have seen being in four <J moths from cocoons found on rose bushes, in which nearly all the space on the primaries between the basal spot and the border, is finely flushed with red, which grows fainter out-wardly, the same red flush being continued down the abdominal margin of secondaries, giving the entire moth a reddish hue ; the occurrence of red on the primaries is not extremely rare, but I have never seen others than these with red on the secondaries, except in the border. SYNONYMY OF THE COLEOPTERA OF THE FAUNA BOREALI-AMERICANA, KIRBY. BY GEO. H. HORN, M. D., PHILADELPHIA, PA. (Continued). 145. Oiceoptoma americanum Linn, has been known by the ante-Linnean name of peltata. 146. " terminatum Kby. is a variety of the preceding. 147. " affine Kby., variety of 145. 148. " canadense Kby., variety of 145.