APHTHONA. 295 
In the female the antenne are much shorter and stouter, and the legs are almost 
entirely black, with the exception of the base of the posterior femora, which is fulvous; 
14 (8). Aphthona unicolor. 
Oblong-ovate, pale fulvous; thorax transverse, impunctate ; elytra extremely finely and irregularly punctured. 
Length 1 line. 
Entirely of a pale fulvous colour ; the head impunctate, the eyes very large, their diameter greater than the space 
dividing them, the frontal tubercles absent, the clypeus with a central ridge; the penultimate joint of the 
palpi thickened; antennz more than half the length of the body, slender, flavous, the second and third 
joints small, equal in length, the fourth twice as long as the third; thorax twice as broad as long, narrowed 
anteriorly, the sides scarcely rounded, the anterior angles very slightly thickened, the posterior margin 
somewhat sinuate on either side, the surface impunctate, shining; scutellum rather broad; elytra mode- 
rately convex, extremely finely and rather closely punctured ; underside and legs fulvous or flavous; the 
first joint of the posterior tarsi as long as the following joints united. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
Broader and of more ovate shape than A. fulvipennis, Jac., and also differing from it 
in the transversely shaped thorax, and in the minutely, irregularly punctured elytra. 
In some specimens the apical joints of the antenne are slightly stained with fuscous. 
14 (c). Aphthona castanea. 
Dark brown, the intermediate joints of the antenne more or less fuscous; thorax transverse, strongly and 
remotely punctured; elytra with a distinct basal depression, strongly and closely punctured. 
Length 1-14 line. 
Entirely castaneous; the head impunctate, except for a few punctures near the eyes; the frontal tubercles 
trigonate, distinct; the clypeus triangular, swollen; antenne short, the apical joints thickened, fulvous, 
the seventh and eighth joints, and in one specimen the ninth also, fuscous; thorax transverse, the sides 
straight, the anterior angles oblique, the surface remotely and strongly punctured; elytra with a distinct 
depression below the base, strongly-punctured in closely approached rows. 
Hab. Panama, Volcan de Chiriqui (Champion). 
The coloration and the remotely punctured, transversely shaped thorax are the 
principal marks of distinction of this species. The female is considerably larger than 
the male, and has the thorax still more transverse and coarsely punctured. The 
prosternum is broad and impunctate. ‘Two specimens. 
16 (a). Aphthona smithi. 
Black ; the antennz (the apical joints excepted) and legs dark fulvous; thorax metallic greenish, finely punc- 
tured; elytra brownish-zneous, strongly punctate-striate, the interstices slightly convex. 
‘Length 1 line. a 
Head impunctate, metallic purplish, impressed with an oblique groove in front of the eyes, the frontal tubercles 
distinct ; antenne rather long, fulvous, the second to the fourth joints equal in length, the terminal two 
joints slightly infuscate; thorax subquadrate, about one half broader than long, the sides straight, the 
anterior angles oblique, the surface finely, distinctly, rather closely punctured; elytra wider at the base 
than the thorax, convex, without basal depression, very regularly and strongly punctate-striate, the punc- 
tures distinct to the apex; legs fulvous, the posterior femora rather darker. 
Hab. ‘Mexico, Omilteme in Guerrero (H. H. Smith). 
