H. M. PARSHLEY 
25 
10. Antero-lateral margins of pronotum distinctly serrate, never deeply 
sinuate; coriuin (inacrop.) always strongly dilated at base, never 
straight laterally 20 
Margins of jironotiiin entire, somelinies evenly granulate, very rarely 
denticulate, often deeply sinuate; coriiim either dilated at base (the 
lateral inargin sinuate) or not so dilated (the lateral margin straight). 
40 
20. Third antennal segment almost three-fourths as long as second; color 
uniform dull black; length, <S.3 mm o. montanus Bergroth 
d'hird segment about one-half as long as second, or less 21 
21. h'econd antennal segment at middle almost or ((iiite as thick as trout 
femora; antennae bicolorous 22 
Second segment at middle distinctly more slender than trout temora, 
never w'tli jiale ring at middle 23 
22. Second antennal segment black; disc of sciitellum dark in apical half. 
17. depictus \’an Duzee 
Second segment brown, biaimulate; disc of scutellum pale reddish. 
18. concinnus Bergroth 
23. Second antennal segment cylindrical, at least from near base to middle, 
often enlarged a very little near ape.x 24 
Second segment distinctly clavate, gradually enlarging from near base to 
apex; rarely cylindrical in ajiical third (fig. 35c) or suddenly enlargi'd 
in ajiical third and about twice as thick at apex as at middle (fig. 3()c)- 
33 
24. Second antennal segment longer than head 2<j. debilis 1 hler 
Si'cond segment shorter than head 25 
25. Antennae very small, scarcely longer than head, slender; scutellum broad, 
sides arcuate, apical half pale (fig. 28d) 28. parvicornis sp. nov. 
.Vntennae much longer than head; scutellum otherwi.se 2t) 
2t). Third antennal .segment pale in apical two-thirds; disc of pronotum 
strongly elevated before and behind transver.se depres.sion; length, 
less than b.S mm 27. cincticornis Bergroth 
Third segment unicolorous or narrowly pale at ajiex; disc of pronotum 
flat or as above 27 
27. Disc of pronotum rather flat, the tran.sver.se de|)ression slight and ill- 
defined 28 
Disc strongly elevated before and behind the very di.stinct transverse 
dej)re.ssion '^1 
28. Pronotum widest at middle; sides of abdomen rather strongly crenate. 
22. censors sj). nov. 
Pronotum widest well behind middle; sides of abdomen entire or notched. 
2 ‘) 
29. Scutellum much longer than head 21. furvus sj). nov. 
Scutellum not longer than head. 20 
30. (Iranulation of head rough; length of second antennal .segment about 
ecjual to width of head including one eye (rarely .slightly longer); 
antero-lateral margins of pronotum usually straight, oblicjiie, with 
variably coarse teeth; form elongate 19. proboscideus \\ alker 
TK.V.VS. AM. EXT. SOC'., XI.VH. 
