8G THE CANADIAN ENTOMOLOGIST. 



(6.) Long. 4-4 + mm. 



(a) Very convex . . . .qiiercitroiiis, gibber, prwiastri, robinice, Caiia- 



\deuse, variegatum, perornattcm. 



(aa) Less convex Guignardi, rosce, Murcliali, maclurarjim, 



[cerasi, rob'niiarum. rugosiiiii, tarsa/e. 



(aaa) Flattisli Lustneri, Lymani, rufuhnn, assimile, aurantia- 



\ciim. Kaiisasense, armefiiaciim, FolsoDii. 

 (7.) Long. 3-3 + mm. 



(a) Convex qiiercitronis, prunasti i. 



(aa) Less convex rufuiiDii, pal/idior^ auranltacuni, Kansasense. 



S^LytnaJii. 



(aaa) Flattened wistariie. 



(8.) Long. 2-2 + mm prunastri, FletcJieri. 



The following supplementary tables are based on the antennie ; the 

 measurements are all in /* : 



Antenn.'F 6-jointed i. 



Antennae 7-jointed 7. 



Antennae 8-jointed 18. 



1. Joints 3 and 4 equal, 6 as long or nearly so Lustneri, King {c^. 



[Reh., Zeit. f. Ent., 1903, p. 409). 



Joint 3 always longest, and very much longer than 2, 4 or 5 2, 



2. Joint 6 long, not very much shorter than 3 . . . rjifuhim d.xxdi pallidior. 



Joint 6 very much shorter than 3 3. 



3. 2 shorter than 4 or 5, 6 not much shorter than 5 . . . . .Iloferi (King). 



2 about equal to 4 or 5 (compare also corni) 4. 



2 longer than 4 or 5 5. 



4. 6 sliorter than 4, which is longer than 2 or 5 . .qicercifex van (Mass.). 

 6 much longer than 4 or 5, which are equal Websteri, var. on 



[^Cyiistis, from Hamburg (fide King), 

 6 longer than 4 or 5, 5 longer than 4 some Kansas armeniacuni. 



5. joint 5 obviously longer than 4. . . . Lyniani (on oak), CanadeTtse (on 



[elm), primasiri 'AwA armeniamm. 



4 and 5 equal or almost so tarsale (Mass., on Cormis)^ 



\rosce (on rose), sp. (Germany, on Pi'unus), Folsomi 

 [(on pawpaw), caprece (of Douglas), nigrofasciatum. 



5 shorter than 4 6. 



