1867.1 ' . 27 
Pyrgotes, u. g. 
Body sub-linear, clothed with fine erect hairs, but glossy. Head and thorax 
narrower than the elytra. Eyes coarsely facetted, muzzle very short. Antenna) 
veiy stout, joints strongly flattened and dilated, their surface bi-carinated, with 
both the apical angles acute and produced; basal joint sub-quadrate, smooth. 
Thorax elongated, narrow, with an obtuse lateral, and a dorsal, prominence far 
behind the middle. Elytra obtusely and obliquely truncated at the apex. Legs 
short and thick ; thighs sub-clavate, tibiae strongly compressed, wide at the apex ; 
tarsi very short and broad, all the joints much broader than long. 
P. ceneus, n. sp. 3i lines. Smooth, shining, finely pubescent; pitchy-red, 
elytra with the entire disk dark brassy -green. Thorax narrow, elongated, impunctate 
on the disk, sides with scattered setiferous tubercles, sides and disk behind the middle 
with obtuse prominences. Elytra punctured, partly in lines, interstices very 
smooth and glossy, apex very obtusely truncated. The tarsi inserted near the 
lower apical angle of the broad tibiEe. 
Ega. This extraordinary little Longicorn is clearly related to 
Piezocera, Serville, and Semilissa, Pascoe. 
DoDEcosis, n. g. 
Moderately elongated, sub-cylindrical. Muzzle short, vertical, antenniferous 
tubercles very large, each surmounted by an acute tooth ; palpi very short, 
terminal joint truncated. Eyes rather coarsely facetted. Antennse twice the 
length of the body, stout, filiform, clothed with long hairs, formed of twelve 
distinct joints, third rather shorter than the fourth, enlarged at the tip on one side, 
rest (including the twelfth) of nearly equal length. Thorax cylindrical, unarmed. 
Elytra linear, apex briefly truncated. Legs moderately short and slender ; thighs 
slightly thickened. Prosternum extremely narrow, anterior coxse conical, conti- 
guous. Basal joint of abdomen not longer than the rest ( <? )■ 
D. Saiperdina, n. sp. 3| lines. ^ . Tawny -yellow, sub-opaque, clothed with long 
fine hairs. Antennse from the second joint black, bases of joints reddish. Face 
convex, owing to the great volume of the antenniferous tubercles. Thorax with a 
tubercle on each side near the anterior angle, and an elongated one on the disk. 
Elytra finely and very closely punctured, suture and lateral margins raised, also 
an elevated Hne along the disk from the base to near the apex, the latter briefly 
truncated. 
Banks of Tapajos. Resembles in general form species of the 
Saperda group. The genus appears allied to Oracilia. 
NiOPHis, n. g. 
Elongated, linear, depressed. Muzzle not extending beyond the lower margin 
of the eyes ; the latter very large, coarsely granulated ; palpi moderately elongated, 
sub-securifonn. Antenniferous tubercles not prominent, vertex plane. Antennse 
stout, greatly elongated, fringed with long hairs ; basal joint clavate, arcuated, 
third joint a little longer than the fourth (terminal joints wanting). Thorax 
elongate, unarmed, narrowed behind. Elytra tapering, depressed, apex of each 
