520 SUPPLEMENT. 
beyond the middle and armed with three long, rather slender, equidistant teeth ; first ventral segment 
transversely tuberculate in the middle and rather deeply depressed in the centre at the apex, the second 
segment broadly depressed along the middle. . 
Length 113-134 millim. (¢ Q.) 
Hab. Mexico, Zapotlan in Colima, Chilpancingo in Guerrero ({6ge). 
A male from Zapotlan and five females from Chilpancingo. This species is allied to 
A. rufipes, but differs from it in the head being coarsely punctured between the eyes, 
the elytra more narrowed anteriorly, and the legs darker, the hind femora of the male 
with three long, subequal teeth. The punctuation of the thorax and of the elytral 
interstices is only visible under a strong lens. 
10. Argoporis levicollis. 
Feebly convex, flattened above, varying in colour from pitchy-black to rufo-castaneous, slightly shining. Head 
minutely or very finely punctured, the punctures near the eyes distinctly coarser, the sides strongly 
reflexed ; antennz stout, short; prothorax as long as broad, feebly convex, widest a little before the 
middle, slightly narrowed behind, the angles obtuse, the base feebly emarginate, the surface smooth or 
almost imperceptibly punctate; elytra elongate-oval, flattened on the disc, with rows of moderately coarse, 
not very closely placed, shallow punctures, the interstices flat throughout and almost smooth, the humeri 
dentiform ; beneath longitudinally wrinkled and with minute scattered punctures; legs pitchy-red; pro- 
sternum declivous behind, produced, the apex vertical. 
3g. Anterior femora feebly carinate on the inner side near the base; anterior tibise curved, denticulate within ; 
intermediate femora finely denticulate on their inner edge; posterior femora moderately incrassate beyond 
the middle and armed with four or five very short, blunt teeth, the inner one slightly stouter than the 
others ; first ventral segment with a rounded, flattened tubercle in the middle and depressed in the centre 
at the apex, the second segment broadly depressed along the middle. 
Length 10-14 milim. (¢ @.) 
Hab. Mexico, Ventanas in Durango (Hége). 
Many specimens of both sexes. This species comes nearest A. cavifrons, but may be 
known from it (and from A. atripes &c. also) by having the elytral interstices flat at 
the apex and the head very differently sculptured. It is less convex than A. cavifrons, 
and the elytra are less abruptly narrowed at the base. From A. atripes it also differs in 
its less parallel shape (the elytra being more oval), more finely punctured head, smoother 
thorax and elytral interstices, paler legs, and more produced prosternum. 
MITYS (p. 97). 
This genus, as already stated (anted, p. 261), belongs to the “* Misolampides.” 
2. Mitys politus. 
Spherotus politus, de Bréme, Rev. Zool. 1842, p. 109". 
Mitys levis, huj. op. p. 98. 
Originally described! from a specimen from Mexico in Chevrolat’s collection. 
