READING PUBLIC MUSEUM AND ART GALLERY

Introduction
Xlll
Pronotum not cylindrical, conical or nearly so, distinctly narrower apically than
at base; front rather narrow, usually much narrower between eyes .... . 49
49. Pronotum unarmed laterally, sides regularly tapering from base to apex; elytra
with basal gibbosities prominent . . ... .... .. ... . . . . . . . 1Iypsioma (p. 18)
Pronotum tuberculate laterally, sides wider behind middle than basally, then
narrowed to apex; elytra with basal gibbosities not prominent
Cipn.,scoia (p. 82)
50. Antennae with third segment bisinuate . . ... . . . . . . .. . . ... . . Sulpitus (p. 139)
Antennae with third segment straight ................ .... .............. 51
51. Pronotum with sides swollen before and behind middle . . . . . . . . Lochmaeocles
Pronotum cylindrical, sides not swollen . . . . ... . . ... . ... . . . . . . . . lschiocentra
52. Antennae with third segment straight or arcuate ........... ..... .. ....... 53
Antennae with third segment bisinuate ..... . ............... .... .. . ..... 61
53. Pronotum conical, sides strongly narrowed from base to apex . . Lachllia (p.11)
Pronotum not conical, sides not regularly narrowed ..... ................. 55
54. Antennae with third segment arcuate, scape slender, very gradually clFate
from base . . . . . . ... . . ... . . . . . . . ... ... . . . .... . ... Typhlocerus (p. 117)
Antennae with third segment bisinuate, scape strongly capitate on apical half
Truncatoides (p. 16)
55. Pronotum with sides swollen before and behind middle ....... ............ 56
Pronotum more or less cylindrical, sides not as above ...... ..... . .. 57
56. Pronotum unarmed laterally, disk wit.hout tubercles; antennal tubercles with
horns directed vertically; prosternum without a median transverse process;
eye with lower lobe twice genal height (Genotype: Hesycha crctacca
Bates) . .... . . .... . . ............. ............ ....... Ephia1es, n. g.
Pronotum tuberculate laterally and on disk; antennal tubercles with horns
dirc-cted forward; prosternum with a transverse process; eye with lower
lobe slightly longer than gena . .... . . . . . .......... Lochmaeocles
57. Antennae with fifth, sixt.h, and seventh segments each longer than fourth
Ischioderes (p. 184)
Antennae with fifth and following segments (except eleventh sometimes) shorter
than fourth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
58. Antennae with scape only attaining or feebly surpassing apical margin of
pronotum . . . . ........................................... Trestonia
Antennae with scape attaining at least apical quarter of pronotum ........ 59
59. Pronotum unarmed laterally ............... ............. ... ... ... ... ... 60
Pronotum at least feebly armed laterally behind middle ......... lschiocemra
60. Pronotum with disk rugose; clytra with a transverse black macula at apical
quarter . ... . ......................................... Apocoptoma
Pronotum with disk punctate; elytra without black maculae . . . . . . . . Cacostola
61. Pronotum with sides deeply impressed or excavated . . . . . . . . Midamus (p. 141)
Pronotum with sides not impressed or excayated ............... ..... ... 62
62. Pronotum unarmed at sides ... ........ .......... ........ .............. 65
Pronotum at least feebly armed Iterally behind middle ................. 63
63. Front narrow, distinctly narrower between eyes, expanded to lower margin of
eyes, thence sides nearly parallel to mouth; tarsi with claw segments pale
at base .. . . . ... ... . . ... ...... ... ... . . . . .. ..... . . . . Charoides (p. 55)