12 
the first, and extends over the whole elytra excepting on the basal 
margin and the extreme edge, which are green. 
This species seems to link the three genera Pyrodes, Mallaspis , 
and Solenoptera ; it agrees in most particulars with Pyrodes. 
Pyrodes Smithianus. 
Scutellum considerably elongated at the point and notched at the 
base, the shoulder and the elytra close to the scutellum are produced, 
and near the shoulder there is a deep groove. The head and thorax 
are rather smooth and closely punctured; the front margin of the 
thorax is slightly notched in the middle; the scutellum is quite smooth 
on the edges, down the middle, and at the tip ; the elytra are roughly 
punctured, the punctures often running together and forming cha¬ 
racters like letters ; there are four longitudinal ribs down each, which 
are branched at the end. 
This Pyrodes is of a bronzy copper colour, the tibiae and most of 
the joints of the antennae being tinged with purple. 
Hab. Brazil. 
A specimen was found by J. P. George Smith, Esq., of Liverpool, 
on Caripi, an island thirty miles from Para : he presented it, with 
numerous other fine insects, to the British Museum. 
Calloctenus, n. g. 
Body small, the elytra extending over its side and considerably be¬ 
yond its extremity. Head much excavated in front. Eyes large and 
prominent. Thorax with a distinct tooth on the sides a little beyond 
the middle. Scutellum of an elongated triangular form, pointed at 
the end. Elytra spined at the suture and at the end of the lateral 
margin. 
Antennae in the male pectinated from the fourth joint, in the fe¬ 
male serrated from the fifth : in the male the first joint is of the same 
length as the fourth exclusive of the appendage ; the third is consi¬ 
derably elongated and w r ith a protuberance at the end; from the 
fourth to the eighth the end is furnished with a compressed appen¬ 
dage narrow at the base, dilated afterwards and blunt at the tip (the 
ninth and other joints broken off). Antennae in the female with the 
terminal joints depressed, oblique at the end, so that the inner edge is 
serrated. Legs moderate, simple, without serratures. Elytra spined 
at the suture and at the end of the lateral margin. 
This genus comes between Pcecilosoma and Anacolus. 
Calloctenus pulcher. PI. XIII. fig. 6. 
Hab. Venezuela. 
Head, thorax, scutellum and under side of body of a dark coppery 
green, the head and thorax rather thickly covered with soft greyish 
yellow hairs ; elytra with three longitudinal, considerably raised keels, 
between each of which is a slighter keel; in the male these latter are 
abbreviated, between the keels the elytra are closely punctured; the 
elytra in the male are of a brownish yellow, the punctured parts, ex¬ 
cept at the base, being darker in colour ; in the female the elytra are 
