THE CANADIAN ENTOMOLOGIST. 203 



TWO NEW SPECIES OF LECANIUM FROM CANADA. 



BV ']'. D. A. COCKEREl.L, N. M. .'\GR. EXP. STA. 



Lecanium (EuUcanium) caryarum, n sp. — 9. Scale (after pro- 

 ducing young) somewliat variable in form, from long. 6, lat. 3^2, alt- 223 

 mm., to long. 5>^, lat. 4I3, alt. 31^ mm., the more .swollen individuals 

 probably affected by parasite.s ; outline in transverse section nearly 

 hemispherical, in longitudinal section more or less lo\v-])yramidal, with 

 the posterior slope considerably the shortest, the apex of the pyramid 

 marked by a more or less prominent boss, sometimes inclined to be 

 double. Colour of scale dark chestnut; sides pitted and plicate to a 

 variable degree. 



Antenuifi rather tmusually long and slender, about 348 \i\i. long ; 

 formula 37 (12) 465 ; 3 is about S3 //./x long, 7 about 50 />,//.; i with two 

 short bristles, 2 with two long bristles near the end, 4 with a very long 

 bristle, 5 and 6 each with a rather short bristle, 7 with two whorls of 

 rather short bristles. 



Tarsus about j'j length of tibia; tibia 116 /v,//. long, tarsus (without 

 claw) about 74 /x/x. L^igiiules long ; thorax of claw extending far beyond 

 its tip, one a little sfiorter and stouter than the other. Length of anal 

 plates about 150 //.//. Width of mouth-parts about 166 \i\).. 



Hub. — Very abundant on twigs and branches of a magnificent tree of 

 Carya alba, on the grounds of Mr. C. Thonger, at Niagara, Ontario, 

 June 17th, 1898 (J. Fletcher). 



There is an unfortunate confusion about Fitch's L. caryce. The 

 original description, published in 1856, is as follows: "Large, very 

 convex, oval, black fading to chestnut brown, in May dusted over with a 

 white powder." Long. 0.40, lat. 0.25 inch. This agrees tolerably well 

 in some respects with a species found by Mr. King, which will be described 

 in a future paper. 



Signoret, however, describes a quite different Z. caryce, based on 

 specimens sent to him as that species by Fitch. This is only 6 mm. long, 

 and has 6-jointed antennae. It is closely allied in all respects to the 

 European L. corni. \Vhat I take to be this species was found by Mr. G. 

 B. King, at Melhuer, Mass., on Gleditschia. This GleditscJiia insect, how- 

 ever, agrees even better with Signoret's account of L. cynosbati, Fitch, 

 and my present opinion is that cynosbati, Fitch, and carycp., Sign, (not 

 Fitch, 1856), are one species, 



