546 Mr. Waterhous@n some South American 
The specimen above described is from Dejean’s collec- 
tion, and I have retained his name for it. 
2. Thyridium punctatum, n. s. 
Oblongo-ovatum, leviter convexum, crebre punctatum ; 
sternis pedibusque cupreis, corpore subtus longe fulvo- 
piloso. Mas. Long. 10 lin. 
A very distinct species on account of its strong sculp- 
ture ; and on account of the deep green colour, which is 
quite of a different kind from any of the T’. psittacina 
eroup, approaching more the colour of A. calcarata, but 
paler, and having pitchy reflections in the shadows. 
Head rather thickly and very distinctly punctured. 
Thorax obliquely narrowed anteriorly from rather behind 
the middle ; moderately thickly punctured on the disk, 
gradually more closely and more strongly punctured 
towards the side ; the base slightly oblique on each side, 
truncate next the scutellum. Scutellum triangular, 
with a slight tendency to cordiform, acute at the apex, 
33 millimetres long, closely and obscurely punctured. 
Elytra thickly and strongly punctured, the punctures 
towards the sides horseshoe-shaped ; each elytron has 
four impressed lines on the disk, and there is a well- 
marked sutural one; the margin below the shoulder is 
somewhat incrassated. The pygidium is rather coarsely 
vermiculose. The sternal process is not very long, and 
is rather slender, not inflated at the apex, but slightly 
curved over the anterior coxe. 
Hab. Venezuela. 
3. Thyridium sodale, n.s. 
Ovale, convexum, nitidum, prasinum, sat crebre evi- 
denter punctulatum. Mas. Long. 15 lin. 
Forehead delicately and rather thickly punctured, the 
clypeus more strongly punctured. Thorax 7 millimetres 
long in the middle, very obliquely narrowed anteriorly 
from rather behind the middle, very delicately and rather 
thickly punctured, the punctures more distinct towards 
the sides ; the anterior angles very acute and moderately 
prominent ; the sides distinctly angular; the base trun- 
cate in the middle next to the scutellum, oblique and 
very gently bisinuate on each side. Scutellum triangular 
