318 HETEROMERA. 
confluent ; antenne moderately long, but little shorter in the female, very slightly widened outwardly, 
the apical joint longer than the tenth, dark ferruginous ; prothorax broad, much wider than long, rather 
strongly margined, the margins shallowly grooved within, the sides rounded, very slightly and obliquely 
narrowing behind, and more distinctly narrowing in front, the anterior angles deflexed and rounded, the 
apex arcuate emarginate (almost straight when viewed from above), the hind angles obtuse, the base 
almost straight though a little emarginate in front of the scutellum, the basal fovez obsolete, the surface 
coarsely, closely, and equally punctured (a little more finely so than the head), the punctures longitudinal in 
form and here and there confluent ; scutellum strongly transverse ; elytra the width of or scarcely wider than 
the prothorax at the base, rather short, a little rounded at the sides, widest in the middle, subtruncate at 
the base, the humeri not prominent, regularly and somewhat deeply punctate-striate, the punctures 
elongate, rather coarse, and closely placed, the interstices feebly convex and almost smooth, the apices 
slightly impressed within and produced and divergent in the male; legs rather short, the femora com- 
paratively smooth, the basal half of the latter fringed with hair beneath, the tibiee pubescent on their 
inner edge; beneath slightly shining, somewhat coarsely and closely punctured, the ventral surface 
also strongly longitudinally wrinkled, the flanks of the prothorax coarsely punctured within and shal- 
lowly strigose without; prosternum declivous, the apex convex; mesosternum very narrow, almost 
unimpressed. 
Length 73-93 millim.; breadth 43 millim. (¢ 2.) 
Hab. Mexico, Morelia in Michoacan (Hége). 
Two examples. This insect should be placed near H. wrews, Germ. (referred by 
Allard to his genus Stenomax), from which it will be readily known by the less rugosely 
punctured head and thorax; the latter broader and more transverse, more strongly 
margined, rounded at the sides, and with obtuse anterior angles; the elytra less 
widened posteriorly, with more coarsely punctured strize and rather convex interstices ; 
the flanks of the prothorax beneath not coarsely strigose, &c. H. cowalis may, 
however, be known from its allies by the very narrow and almost unimpressed meso- 
sternum. 
11. Helops suavis. 
Ovate, convex, bronze-brown, with a slight golden tint, shining. Head short, broad, shallowly transversely 
impressed in front, coarsely, irregularly, and somewhat sparingly punctured, the punctures here and there 
longitudinal in form ; antenne long, still longer and passing the middle of the elytra in the male, very 
slightly widening outwardly, the apical joint longer than the tenth, reddish-brown ; prothorax convex, 
very broad, much wider than long, rather strongly margined, the sides rounded, a little narrowed and 
sometimes feebly sinuate behind, and more distinctly narrowed in front, the anterior angles deflexed and 
rounded, the apex arcuate emarginate (almost straight when viewed from above), the hind angles obtuse, 
the base feebly bisinuate, straight in the middle, and very distinctly margined, the basal fovexe obsolete or 
scarcely visible, the surface sparingly, shallowly, and somewhat finely punctured; scutellum strongly 
transverse ; elytra short, the width of the prothorax at the base, widest in the middle, a little rounded at 
the sides, subtruncate at the base, the humeri not very prominent, finely but deeply punctate-striate, the 
punctures moderately coarse, oblong, and distantly placed, the interstices broad, nearly flat on the disc, 
feebly convex outwardly, and almost smooth; legs reddish-brown, the tibie comparatively smooth ; 
beneath shining, very sparingly, shallowly, and finely punctured, the first ventral segment usually more 
coarsely so, the sides of the metasternum almost impunctate, the flanks of the prothorax very shallowly 
strigose or smooth ; prosternum gradually declivous, somewhat convexly or subacuminately produced ; 
mesosternum narrow, feebly excavate. 
Length 53-8 millim. ; breadth 3-43 millim. (¢ 2.) 
Hab. Mexico, Juquila (Sallé); Guaremaa (Sallé). 
