DIOPTROPHORUS. . 98 
Anchonus, differ from the females in having the antenne inserted nearer the tip of the 
rostrum, with the apical portion of the latter somewhat rounded at the sides. In 
D. verrucosus, which is larger and more robust than any of its allies, the facets of the 
eyes are flattened, while in the other species they are convex. 
§ 1. Hye-facets convex. 
1. Dioptrophorus ocularis. 
Anchonus ocularis, Fahr. in Schénh. Gen, Cure. vii. 2, p. 894". 
Dioptrophorus ocularis, Faust, Deutsche ent. Zeit. 1892, p. 35”. 
Hab. Mexico ? (coll. Sommer '). 
Not seen by Faust, nor contained in our collection, the numerous specimens received 
under this name from Sallé being incorrectly identified, and belonging to the genus 
Anchonus. D. ocularis, to judge from the description, must be very nearly allied to 
D. simplex, but with the prothorax widening from the base to before the middle and 
then suddenly narrowed ; it is not unlikely that they will prove to belong to the same 
species. 
2. Dioptrophorus simplex. 
Dioptrophorus simplex, Faust, Deutsche ent. Zeit. 1892, pp. 36, 59°. 
Hab. MeExico', Jacale (Sallé), Toluca, Cordova (Hége). 
Apparently not rare in Mexico, whence upwards of a dozen examples have been 
received by us. In one or two of them the elytral elevations are fewer in number and 
less distinct, and in others they are more elongate. Length 4-5 millim. 
3. Dioptrophorus fausti, sp. n. (Tab. VI. figg. 20, 204, 3.) 
Elongate-ovate, rather depressed, black, the legs piceous, the antennz obscurely rufescent ; covered in part by 
a greyish incrustation and with scattered minute ochreous scales, the legs with short hairs. Rostrum 
stout, nearly as long as the prothorax, coarsely, very shallowly punctate. Prothorax a little longer than 
broad, widest at the middle, narrowed anteriorly and slightly so posteriorly, constricted before the apex, 
the hind angles somewhat obtuse; coarsely punctate, except along a depressed space down the middle 
and a sinuous space on each side between this and the margin. Elytra nearly twice as long as the 
prothorax, flattened on the disc to near the apex and then abruptly declivous ; coarsely seriato-punctate, 
the alternate interstices with scattered, feeble, oblong elevations, the third and fifth each with a very 
prominent tubercle at the commencement of the apical declivity. 
Length 5, breadth 2), millim. (¢.) 
Hab. Mexico (Sal/é). 
One specimen. Very like D. simplex, but more depressed, the elytra each with two 
very prominent tubercles at the commencement of the apical declivity, a character also 
shared by D. prolixus. 
