Exophthalmus carinirostris Boheman 1840

Length 11—15½, breadth 3 9/10—6 1/10 millim. (♂ ♀.)

The alternate elytral interstices not or very slightly raised, the humeri with a few opalescent scales, similar to those on the legs and head.

Hab.MEXICO (Mus. Brit.), Toxpam, San Andres Tuxtla, Juquila (Sallé), Cordova, Oaxaca¹ (Höge), Amula (H. H. Smith); GUATEMALA (coll. Pascoe), Coban (Champion); NICARAGUA, Chontales (Janson).

Not rare in the Mexican States of Oaxaca and Vera Cruz; the type is from the first-mentioned State. The general vestiture is whitish or pearly-white, sometimes greenish with the raised alternate elytral interstices and two vittæ on the disc of the prothorax white, the head, rostrum, prothorax, and legs often tinged with cupreous or golden. The sharply carinate rostrum, with the upper anterior portion less divergent on each side in front, the more numerous elytral striæ, &c., readily distinguish this species from Compsus auricephalus. The antennal scape is slender at the base in the female. The elytra have the alternate interstices 2, 4, 6, 8, and the basal portion of 3, widened and subcostate, and 8 bifurcate beyond the middle, the intervening space enclosing two short supplementary striæ. The two examples (♀) from Guatemala have the elytral interstices uniformly flattened or the third very slightly raised anteriorly; they are very like E. margaritaceus, which has an obsoletely carinate rostrum and less prominent eyes. The specimen figured on our Plate has been compared with the type in the Sommer collection, kindly lent by Mr. O. E. Janson.

Var. The alternate elytral interstices not or very slightly raised, the humeri with a few opalescent scales, similar to those on the legs and head.