66 
Journal New York Entomological Society. [Voi. vi. 
that author by five, the species hitherto placed in Sinoxyton being quite 
heterogeneous and in no single instance truly a member of that genus. 
Sinoxylon dinoderoides , Amphicerus fortis and Dinoderus brevis are 
also types of distinct genera. The genus proposed for the last named 
species is called Patea in the table. The genera known thus far may be 
thus distinguished : — 
Tarsi long, with the last joint relatively shorter, the second joint usually elongate ; 
claws and tibial spurs stouter, grooved beneath, the edges of the groove minutely 
crenulate. 2 
Tarsi short, the four basal joints subequal among themselves and together nearly 
equal to the fifth; claws smaller and more slender, not at all crenulate within. .9 
2_Funicular joints of the antenna; very short and closely united, together never 
longer than the first joint of the club, the latter long, loose and strongly com¬ 
pressed .......... • ... •••3 
Funicular joints more elongate and less closely united, together generally much 
longer than the first joint of the club.^ 
3—Antennal club 3-jointed. ^ 
Antennal club 4 jointed.. • .Tetrapriocera 
4_Antennae io-jointed, the elytral declivity with well-marked spines or tubercles. .5 
Antennae 9-jointed, the elytral declivity without spines or tubercles at the sides, or 
with very rudimentary tuberculiform irregularities, excavated near the suture, 
the latter with a spiniform elevation ; antennal club moderate in development, 
its joints decreasing in width and only very feebly serriform.Xylopertha 
5—Antennal club moderately developed, its first and second joints nearly similar in 
form; elytral declivity sexspinose. XylobiopS 
Antennal club greatly elongated, its first and second joints dissimilar in form, the 
former more or less outwardly produced at apex; elytral declivity quadritubercu- 
lose Dendrobiella 
6 _Joints of the antennal club strongly compressed and deeply bistnate from the ap¬ 
ical margin; front simply tumid; hind angles of the prothorax rounded. 
Amphicerus 
Joints of the antennal club strongly compressed but not striate, the two sensitive patches 
near the apices of the joints rounded and feebly marked; front lamellarly promi¬ 
nent behind the clypeus ; hind angles of the prothorax not rounded. . Apatides 
Joints of the antennal club but feebly compressed and generally quite convex, the 
first two more or less transverse, with the two sensitive patches rounded and sub- 
apical ; front not transversely prominent. 7 
7 _Tibiae dentate externally ; claws abruptly bent at base, not distinctly crenulate; 
size very large.Dinapate 
Tibiae not dentate; claws evenly arcuate; size moderate or small. 8 
8—Front margined at the sides; eyes well developed.BostrlchUS 
Front not margined, convex ; eyes small.•.Micrapate 
9_Antennae with the two basal joints relatively smaller, the funicle well developed; 
club rather short, 3-jointed. 
Antennae io-jointed; body elongate, the head exserted.Dinoderus 
Antennae 11-jointed; body short and stout; head deeply inserted.Patca 
