26 [J"'y. 
Phrxnoceis, n. g. 
Body elongated, sub-depressed. Muzzle short, eyes coarsely facetted ; anten- 
niferous tubercles prominent. Antennae elongated, filiform, unarmed ; basal joint 
with a tubercle near the apex beneath. Thorax sub-quadrate, armed on each side 
with a spine. Elytra prolonged at the apex, and each terminating gradually in a 
sharp spine ; surface punctured, and with rows of small tubercles. Legs stout, 
thighs large and strongly clavate. 
Ph. notaMUs, n. sp. 10 lines. <J . Head and thorax coarsely and scantily 
tomentose, rest of the body clothed with short hairs. Thorax uneven, and covered 
with small scattered tubercles. Reddish-tawny. Thorax with the depressed parts 
black. Elytra ornamented with three strongly undulated black belts, the apex also 
black ; surface shining, punctured and roughened with three or four rows of 
small tubercles ; tips of thighs and tibiae black. 
Ega. Belongs to the AcJiryson group. 
Zathecus, n. g. 
Body elongate, parallelogrammical, depressed. Muzzle short, palpi sub-securi- 
form ; eyes prominent, and very coarsely facetted. Antennas elongated, filiform, 
finely setose beneath, unarmed ; antenniferous tubercles prominent, oblique. 
Thorax nearly square, unarmed ; above sub-convex, uneven. Elytra ai-med each 
with two spines at the apex, surface tuberculated. Legs elongated, thighs abruptly 
and strongly clubbed ; tarsi very slender, moderately short. Mesosternum narrow 
behind. 
Z. gra/phites, n. ep. 8 lines. S • Testaceous, head and thorax clothed with 
silky tomentum. Vertex dusky, basal joints of antennae blackish beneath. Thorax 
■uneven and finely tuberculated, black, with a curved testaceous belt across anterior 
part. Elytra near the base and suture marked with a black patch, followed behind 
by two curved black streaks ; the testaceous apical half with a brownish cloud in 
the middle ; whole surface roughened with small scattered tubei'clcs, and irregular, 
but not large, punctures. Legs and linder-surface testaceous, sides of prothorax 
and breast and basal part of hind thighs blackish. 
Ega. The markings of the elytra are similar to those in the genus 
Ibidion ; the genus, however, in structure, belongs to the Achryson 
group. 
Ar.eotis, n. g. 
Linear, slender. Muzzle slightly elongated and narrow in front ; palpi trun- 
cated ; lower lobe of the eyes very large, upper lobe small, linear ; coarsely facetted. 
Antennae long and slender, filifonn, simple, basal joint long and but slightly thick- 
ened. Thorax elongated, sides with a minute tubercle behind the middle. Elytra 
linear, sub-depressed, apex rounded. Legs long and slender ; thighs clavate, tarsi 
moderately short ; hind thighs extending much beyond the apex of the elytra. 
A. fragiUs, n. sp. 2^ lines. S . Slender, yellow-testaceous ; apex of antenna! 
joints, from the 3rd, blackish. Abdomen brown. Body above glabrous, head and 
thorax very finely and closely punctate, elytra more distinctly punctured, legs and 
antennae sparingly setose ; thorax with a deeply impressed angular line towards 
the hind margin. 
Banks of the Tapajos. The genus will come amongst those ranging 
between Obrium and Haruspex (Thomson). The antennal joints are 
not grooved as in Havuspex. 
