196 
cription of his À. viridi-ænea) while the other details agree better 
with his #wfcollis. In all, the abdomen is rufous, but the segments 
have a metallic blue margin, more or less broadly marked. The 
sides of the head in all the specimens before me is nigro-æneous 
and shining at the vertex, fulvous at the middle, thus agreeing 
again with 2. ruficollis but in that species the thorax is entirely 
rufous according to Clark’s description, without any transverse 
band. 
Platyxantha curvicornis n. sp. 
Flavous, abore more or less fulvous, the antennæ (the apical two 
joints excepted) fuscous ; thorax deeply transversely sulcate, 
impunctate, elytra finely and closely punctured. 
Var. Antennæ fulvous or flavous. 
G' The lower joints of the antennæ curved, the apex of the last 
abdominal segment incised at each side. 
Length 2 1/2 lines. 
G: Head impunctate, the frontal elevations trigonate, distinct, 
bounded behind by a deep transverse groove, clypeus acutely raised 
into a triangular ridge, palpi rather incrassate, eyes large, antennæ 
extending below the middle of the elytra, fuscous, the apex of the 
first and the two last joints, flavous, second joint very short, the 
third elongate, as long as the first joint, the following four joints 
curved; thorax twice as broad as long, the sides straight at the 
base, slightly rounded and widened before the middle, the surface 
with a deep transverse suleus, not extending to the sides, impunc- 
tate, scutellum broad, triangular ; elytra wider at the base than the 
thorax, the shoulders rather prominent, the base without depres- 
sion, but slightly raised, the surface very minutely and elosely 
punctured, their epipleuræ broad, extending to the apex; underside 
and legs flavous, tibiæ unarmed, the first joint of the posterior 
tarsi, longer than the following joints together, rather flattened 
and clothed like the tibiæ with fulvous pubescence the second and 
third joints small, claws appendiculate, the anterior coxal cavities 
closed. 
River N'Gamic. (Brussels Mus.). 
A female specimen is also before me, which agrees with the 
other sex in most particulars, but the thoracic sulcus is less deep, 
the antennæ are fulvous, with the exception of the terminal two 
joints which are black, and the last abdominal segment is simple; 
the joints of the antenuæ are also not curved but straight; it is 
howerer quite possible, that this specimen represents another 
closely allied species. 
