294 PHYTOPHAGA.—SUPPLEMENT. 
obtuse, slightly thickened, the surface impunctate, with an obsolete transverse depression on either side at 
the base (only visible when viewed laterally) ; scutellum large, black; elytra broader at the base than the 
thorax, the shoulders prominent, the surface finely and closely punctured in semiregular rows; underside 
and legs fulvous, the breast piceous ; the last abdominal segment of the male with a deep longitudinal 
excavation. 
Hab. Guaremata, Pantaleon, Zapote (Champion); Panama, Bugaba, Volcan de 
Chiriqui, Tolé, San Feliz (Champion). 
Principally distinguished by the transverse thorax, the piceous breast, and the 
excavate last abdominal segment in the male. In one specimen from Zapote the 
breast is fulvous, as well as the rest of the underside. 
8(c). Aphthona dimidiaticornis. 
Below piceous, above obscure eneous; the antennz (the intermediate joints excepted) and the legs flavous ; 
thorax impunctate; elytra extremely finely punctate-striate, eeneous or fulvous. 
Length 2-13 line. 
Head impunctate, obscure seneous; antenne slender, more than half the length of the body, the basal four (the 
first and second sometimes slightly infuscate) and the apical three joints flavous, the others black, the third 
and fourth joints equal; thorax subquadrate, about one-fourth broader than long, the sides perfectly 
straight, the posterior angles tuberculiform, the anterior ones oblique, the surface entirely impunctate, 
seneous, fulvous towards the base and apex; elytra wider at the base than the thorax, eneous, with a 
fulvous tint in certain lights, scarcely perceptibly punctate-striate ; legs flavous, 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
This species may be separated from the allied forms by the colour of the antenne 
and the eneous tint of the upperside. A single specimen, from the same locality, is 
much larger than the others, and has the third and fourth and the apical two joints of 
the antenne only flavous; the elytra flavous, with a metallic gloss, and more distinctly 
depressed below the base. It is probably a variety of the same species. 
Aphthona mexicana (p. 366). 
To the localities given, add :—Mexico, Chilpancingo (H. H. Smith); Panama, Bugaba 
(Champion). 
14 (a). Aphthona femorata. 
Dark fulvous; the antennz (the basal two joints excepted) black ; thorax impunctate; elytra finely punctate- 
striate ; legs fulvous, the apex of the posterior femora and the posterior tarsi more or less black. 
Length 13 line. 
Head impunctate, the frontal tubercles distinct, transverse, the carina short; palpi slender; antennz more 
than half the length of the body in the male, much shorter in the female, black, the basal two joints and 
part of the third fulvous, the others black, the third and fourth joints equal; thorax nearly twice as | 
broad as long, the sides rounded, the anterior angles slightly oblique, the posterior ones forming a tooth 
or tubercle, the surface without any depression, entirely impunctate; scutellum pointed; elytra slightly 
widened posteriorly, with very fine punctures placed in rows, distinct nearly to the apex; underside and 
femora (the hind pair excepted) fulvous, the apical half of the posterior femora and the posterior tarsi 
black; the first joint of the posterior tarsi as long as the other joints united. 
Hab. Panama, David in Chiriqui (Champion). 
