HEMIPTERA HETEROPTERA. 151 
Black, fusiform, slightly convex and shining, with hardly any bristles. 
Head hardly punctured, transversely and very slightly rugulose, about half 
the breadth of the thorax. Eyes bright red. Antenne much less than half 
the length of the body; first joint red at the tip; second a little longer 
than the third ; fourth much longer than the third; fifth a little shorter 
than the fourth. Thorax with a few large punctures along each side, and 
with an indistinct transverse furrow which is obsolete on each side and is 
accompanied by a few large punctures. Scutellum with a few large 
punctures, its breadth at the base much shorter than its length. Legs 
robust; tibia with stout spines. Fore wings dull, thinly and minutely 
punctured, more largely punctured along the hind border; membrane 
piceous. Length of the body 52 lines. 
a. Orizaba. From M. Sallé’s collection. 
21. ASTHUS FORTIS. 
Niger, crassus, ellipticus, nitens ; capitis thoracisque latera setosa ; caput 
oblique striatum ; antenne fulve, articulis 30 Aoque apice nigri- 
cantibus ; thorax subglaber, sulco transverso sulcoque brevi longitu- 
dinali ; scutellum subpunctatum, pedes crassi, tarsis rufescentibus ; 
ale antice glabre, quadristriate, membrana alba. 
Black, robust, elliptical, shining, slightly convex, beset with stout 
bristles along the sides of the head and of the thorax. Head more than 
half the breadth of the thorax, almost smooth, except some oblique striz 
on each side in front. Eyes black. Rostrum reddish. Antenne tawny, 
about one-third of the length of the body ; joints from the second to the fifth 
slightly and successively increasing in length; third and fourth joints black- 
ish, except towards the tips. Thorax almost smooth, with a distinct trans- 
verse furrow very near the fore border, and with an indistinct longitudinal 
furrow which extends from the transverse furrow to one-third of the length. 
Scutellum thinly punctured, very much longer than its breadth at the base. 
Legs thick, with stout spines ; tarsi reddish. Fore wings smooth, with two 
striz near the costa and two near the hind border ; membrane white, bya- 
line. Length of the body 3} lines. 
a, Oajaca. From M. Salle’s collection. 
\ arte 22. AATHUS TENUIS. 
Niger, ellipticus, nitens, subglaber ; capitis thoracisque latera setosa ; an- 
tenne picee ; thorax sulcis duobus transversis subarcuatis, sulco brevi 
longitudinali; scutellum subpunctatum; pedes picet; ale antice 
subglabre, quadristriate, membrana fusca. 
Black, elliptical, shining, nearly flat, a few long bristles on the sides 
of the bead and of the thorax. Head nearly smooth, about half the 
breadth of the thorax. Eyes black. Rostrum reddish. Antenne piceous, 
about one-third of the length of the body; joints from the second to the 
fifth about equal in length. Thorax nearly smooth, with two slightly 
cnrved transverse furrows, one very near the fore border, the other across 
the middle; a slight longitudinal furrow extending for a short space 
hindward from the first transverse furrow. Scutellum with a few punc- 
tures, much longer than its breadth at the base. Legs piceous, stout. Fore 
wings almost smooth, with two strie near the costa and two near the hind 
border; membrane brown. Length of the body 2} lines. 
a. Orizaba. From M. Salle’s collection. 
