collected in the Indian Islands by Mr, A. R. Wallace. 135 
Metopiestes castaneus. 
M. rufo-castaneus, nitidus; fronte subplana, punctata; prothorace di- 
stincte punctato, 
Hab. Mysol. 
Subcylindrical, reddish chestnut, shining; head rather flattish in 
front, with closely set, small, round punctures ; prothorax rather longer 
than broad, very concave, contracted posteriorly, with small, oblong, 
rather distant punctures, a short semicircular elevated line at the base ; 
scutellum rounded or punctiform, small, but very distinct; elytra 
parallel, with five very strongly marked caring on each, the interstices 
nearly impunctate; antennz and legs ferruginous. Length 23 lines. 
Differs from Metopiestes hirtifrons in being smaller and less robust, 
without hairs on the front, and in its rounded (not oblong or ovate) 
scutellum. 
Metopiestes erosus. (Pl. VIII. fig. 11.) 
M. fuscus, subopacus; fronte excavata, griseo hirta; prothorace leviter 
oblongipunctato, 
Hab, Batchian. 
Subcylindrical, dark brown, nearly opaque; head hollowed out in 
front, the hollow very clearly limited above by a rounded line sepa- 
‘rating it from the vertex, the interior irregularly granulated and filled 
with scattered greyish hairs; prothorax considerably longer than 
broad, convex, scarcely contracted behind, covered with closely set, 
minute, oblong punctures ; scutellum punctiform; elytra parallel, with 
five rather strongly marked carinze on each, the interstices impunctate ; 
legs and antenne reddish chestnut, shining. Length 13 line. 
The smallest and, proportionally, the slenderest of the three 
species, and otherwise well characterized by its longer and finely- 
punctured prothorax, and the very remarkable excavation which 
occupies nearly the whole of the space between the eyes and the lip. 
This character is probably sexual, the presence of hairs distinguish- 
ing only the males, 
Machlotes incisus. 
M. rufo-fuscus, opacus; prothorace utrinque tricostato, sulcis nitidis, 
basi costis duabus latis; elytris sulcatis, sulcis biseriatim punctatis. 
Hab. Morty. 
Dull reddish brown; head coarsely punctured; prothorax half as 
long again as broad, narrowed behind, truncate and a little gibbous in 
front, slightly rounded at the sides, the anterior angles prominent, the 
disk with three very broad costz on each side, which are interrupted 
posteriorly by a deep irregular cleft completely dividing all but the 
external costa on each side, the two intermediate costz of the basal 
