176 HETEROMERA. 
2. Arrhenoplita ferruginea. | . 
Evoplus ferrugineus, Lec. New Sp. Col. p. 1287; Horn, Rev. Ten. of Am. north of Mexico, p. 366’. 
Oplocephala castanea, Motsch. Bull. Moscou, xlvi. part 1, p. 467 °. 
Hab. Norta America, Louisiana !?%, New Orleans *.—Mexico, Cordova, Vera Cruz 
(Sallé), Jalapa (Hoge); Guaremata, San Gerénimo, Duefias (Champion).—ANTILLES, 
Cuba (coll. F. Bates). 
Many examples, agreeing well with others from the United States. In fully-deve- 
loped males of this insect the head is broadly and deeply excavate on each side behind 
the eyes (instead of in the centre of the vertex, as in some of the allied species), and 
armed with two long, stout, curved horns; in poorly-developed individuals of the same 
sex (taken in company with the others) the horns are represented by stout conical 
tubercles, and the head is not excavate behind the eyes. 
3. Arrhenoplita clavicornis. (Tab. VIII. fig. 7, 3.) 
Oblong ovate, strongly convex, reddish testaceous, shining. Head in the male finely and sparingly punctured, 
the epistoma triangularly extended on each side in front, the antennary orbits thin, slightly expanded, 
and rounded at the sides, armed between the eyes with two long, curved, suberect, converging horns, and 
the vertex deeply excavate in the middle; in the female coarsely and subrugosely punctured, transversely 
impressed in front, and the intraocular space slightly raised on each side just within the eye; antenne with 
the six outer joints strongly widened, the fourth and fifth joints but little wider than the third; prothorax 
transverse, widening from the rounded anterior angles to beyond the middle, thence rounded to the base, 
the hind angles very obtuse, the surface coarsely and rather closely punctured, the base with a shallow 
oblique fovea on each side; elytra rather short, subparallel to beyond the middle, thence rounded and 
narrowing to the apex, with regular rows of coarse shallow punctures, the interstices convex outwardly and 
comparatively coarsely and rather closely punctured, more testaceous in colour than the head and thorax ; 
legs and antenne testaceous; beneath shining, the ventral surface darker and confluently and rather 
coarsely punctured. 
Length 3-4 millim. (¢ 2.) 
_ Hab. Mexico, Cordova (Sallé). 
Six examples. Smaller and comparatively shorter in form than A. ferruginea ; the 
antenne with the six outer joints only widened; the cephalic horns in the male erect 
and converging, the thorax less rounded at the sides and narrowing from the middle to 
the apex, the interstices of the elytra much more coarsely punctured. This is one of 
five allied species found by M. Sallé at Cordova. 
4, Arrhenoplita oblonga? 
Hoplocephala oblonga, Chevr. Compt. Rendus de la Soc. Ent. Belg. xxi. p. xevii.’ 
Hab. Nicaracva, Chontales (Belt).—Brazit, Parahyba !. 
Four examples (three female and one male) of an Arrhenoplita from Chontales are 
possibly referable to A. oblonga, Chevr.: the head in the male being similarly armed, 
€.g. with two short conical horns. ‘ 
