286 | HETEROMERA. 
smooth thorax and under surface, narrow and acuminately produced prosternum, and 
other characters noticed above. 
14. Nautes hilaris. 
Ovate or broad ovate, very convex, bright golden-bronze, sometimes with a slight greenish tint. Head rather 
short, shallowly transversely impressed in front, closely and somewhat coarsely punctured anteriorly, the 
vertex very much smoother, the epistoma subtruncate in front; antenne rather long, widening a little 
outwardly, not quite reaching to the middle of the elytra in the male, the apical joint about as long as the 
tenth, ferruginous ; prothorax short, broad, strongly transverse, strongly margined, the sides gradually 
converging from the base, a little rounded about the middle, and more rapidly narrowing anteriorly, the 
anterior angles a little prominent and rather broadly rounded, the apex arcuate emarginate, the hind 
angles somewhat acute, the base immarginate and very strongly bisinuate, the basal fovex very shallow, 
the surface sparingly and moderately finely (though deeply) punctured, a narrow ill-defined longitudinal 
space on the centre of the dise impunctate ; scutellum triangular, rather small; elytra a little broader 
than the prothorax at the base, very convex, altogether broader and almost gibbous in the female, 
rounded at the sides, the humeri a little prominent, finely punctate-striate, the punctures distantly placed 
and still finer and almost obsolete behind, the scutellar stria obsolete, the interstices almost flat, smooth ; 
legs almost smooth, brownish-bronze, the tarsi ferruginous or fusco-ferruginous, the three basal joints of 
the anterior tarsi a little dilated in the male; beneath shining, very dark bronze, the ventral surface 
finely and very sparingly punctured and shallowly longitudinally wrinkled, the flanks of the prothorax 
very shallowly wrinkled ; intercoxal process triangular; metasternum short, with scattered very coarse 
impressions on its anterior half, the side-pieces almost smooth ; prosternum horizontal, rather broad, 
broadly produced and received by the deeply excavate V-shaped mesosternum, the sides of the latter 
vertical in front. Body apterous. 
Length 5-62 millim.; breadth 24-33 millim. (d 2.) 
Hab. Guaremata, San Gerénimo (Champion). 
Three examples. This species differs from WV. leviventris by its more shining surface, 
impressed head, distinctly punctured and differently shaped (more rounded at the sides 
and not so rapidly converging from the base) thorax, broader prosternum, coarsely 
punctured metasternum, &e. 
15. Nautes nitidissimus. (Tab. XII. fig. 17, ¢.) 
Oblong ovate, convex, golden-bronze, the prothorax with a slight greenish tint, very shining. Head very 
shallowly transversely impressed on each side in front, sparingly and rather finely punctured, the vertex 
smoother; antenne long, fully reaching to the middle of the elytra in the male, very slightly widening 
outwardly, piceous; prothorax broad, transverse, narrowly margined, somewhat transversely convex, the 
sides rounded about the middle, sinuate but not widening (if anything narrowing a little in the male) 
from the middle to the base, and narrowing anteriorly, the anterior angles broadly produced and rounded, 
the apex arcuate emarginate, the hind angles prominent, the base very strongly bisinuate and almost 
immarginate, the basal fovee quite shallow, the disc (in one example) shallowly impressed before 
the base, the surface finely and rather sparingly punctured; scutellum comparatively very small, trans- 
versely triangular; elytra a little broader than the prothorax at the base, convex, rather short, the humeri 
prominent in front and distinctly grooved within for the reception of the hind angles of the prothorax, 
rounded at the sides, constricted on each side before the apex, the apex a little produced, very finely and 
lightly punctate-striate, the punctures distantly placed, the interstices perfectly flat and exceedingly 
minutely and sparingly punctured; legs greenish-bronze, very sparingly punctured; anterior tarsi with 
the three basal joints equal in width, the hind tibie in the male a little swollen in the middle of the inner 
side; beneath bright greenish-bronze, the ventral surface shallowly longitudinally wrinkled and very 
sparingly and finely punctured, the flanks of the prothorax with a few very coarse punctures within 
(anteriorly) and smooth without; intercoxal process very broad; metasternum very short, impressed in 
