286 
GEO. H. HORN, M. D. 
28. — Lateral marginal line of the thorax, as seen from the side, sinuous ; elytra 
more or less ornate, with pubescent spots (except in some addendus). 
PI. viii. fig. 9 29. 
Lateral margin of thorax straight, deflexed only in front ; elytra without 
pubescent spots. PI. viii, fig. 10 33. 
29. — Front more or less concave and very distinctly impressed 30. 
Front convex, not impressed. 
Prosternal lobe deeply emarginate fjoC'oiitei. 
Prosternal lobe entire, rounded or obtuse. 
Thorax transversely strigose ; elytral pubescence forming a design. 
abdiiotiiN. 
Thorax finely and very obliquely strigose, shining; elytra spotted as 
in fallax ]>alina(‘olli<«. 
30. — Elytra vaguely channeled, the groove densely punctured and with a pu- 
bescence forming a not dense vitta fbli.v. 
Elytra not channeled, the pubescence arranged in three spots as in fallax..3l. 
31. — Pygidium carinate in both sexes 
Pygidium not carinate 32. 
32. — Head not roughly sculptured, punctate, the punctures forming strigfe ; color 
feneo-cupreous, as in many politus floi’iilaiiii!^. 
Head roughly strigose, more pubescent and opaque, color dull bronze, as in 
fallax addend 
33. — First two ventral segments of male conspicuoinsly channeled and pubes- 
cent: the median line of body in male pubescent laeustrii^. 
First two ventral segments of male flat or feebly channeled, not pubes- 
cent 34. 
34. — Antenn® slender, joints longer than wide egeims. 
Antenn® shorter, the serrate joints wider than long 35. 
35. — Posterior border of hind coxal plate bisinuate, the outer free angle acute 
and somewhat prolonged ; disc of thorax not transversely depressed ; 
j)rosternal lobe not emarginate. 
Head coarsely punctate; thorax without median depression; prosternal 
lobe rounded iiiiboili«<». 
Head verj^ indistinctly punctate in both sexes ; thorax with feeble median 
groove; prosternal lobe truncate or feebly emarginate. ...abdifiis. 
Posterior border of hind coxal plate rectilinearly truncate, the free angle 
rectangular and not prolonged ; disc of prothorax transversely de- 
pre.ssed posteriorly; prosternal lobe emarginate 1 1 ii!^. 
In order that there may be no misunderstanding, the species de- 
scribed by Say have been thought worthy of S[)ecial reference, so 
that some previous erroneous determinations may be corrected. 
For convenience the species will he given in the order described, 
and reference made to “ The com[)lete writings of Thos. Say on the 
Entomology of North America,” edited by John L. LeConte, M.D., 
under the abbreviated title, ” edit. Lee.” 
