210 RHYNCHOPHORA. 
One specimen, in perfectly fresh condition, no doubt a male. The squamosity of 
the elytra is so dense as to hide the sculpture. The sutural angles are very narrowly 
separated at the apex, and the pygidium hidden, and the insect therefore would be 
almost as well placed in the genus Zychius, but the funiculus is 6-jointed, as in 
Sibinia. 
3. Sibinia tessellata, sp.n. (Tab. XII. fig. 5.) 
Broad-ovate, black, the outer half of the rostrum, the antennew, and tarsi ferruginous; mottled above with a 
dense clothing of elongate, ochreous and brown scales, with some whitish ones intermixed, the brown 
scales so arranged as to form an irregular series of subquadrate spots on each of the elytral interstices ; 
the vestiture of the legs ochreous and that of the under surface whitish. Rostrum longer than the 
prothorax, curved, stout at the base and tapering outwards, seriate-punctate, bare, shining, and almost 
smooth in its outer half, the antennz inserted about the middle. Prothorax transverse, rounded at the 
sides, narrowing from a little before the base and constricted in front, the base sinuate, the surface. 
densely punctate. Elytra much wider than the prothorax, narrowing from a short distance below the 
base, separately rounded at the apex; finely punctate-striate, the interstices flat and densely rugulose. 
Pygidium narrowly exposed. Legs short and stout. 
Length 23, breadth 13 millim. 
Hab. Mexico, tSierra de Durango * (er Flohr). 
One specimen, probably a female. Easily distinguishable by the tessellate arrange- 
ment of the brown scales on the elytra. It is less convex than S. rotundata, with the 
prothorax more rounded at the sides, the apices of the elytra separately rounded, &c. 
4. Sibinia candidata, sp. n. 
Broad-ovate, black, the tip of the rostrum, the antenns, and tarsi rufo-piceous or obscure ferruginous ; thickly 
clothed with greyish-white, oval scales, the striee with fine, depressed, inconspicuous sete, the vestiture of 
the under surface whitish. Rostrum curved, a little longer than the prothorax, stout, tapering at the tip, 
rugulose, the scrobes sinuous, the antennx inserted far before the middle. Prothorax transverse, a little 
rounded at the sides, narrowing from the base, densely, finely punctate. Elytra wider than the prothorax, 
somewhat rounded at the sides, separately rounded at the apex; finely punctate-striate, the interstices 
flat and densely rugulose. Legs short and stout. 
Length 3-3), breadth 13-1, millim. 
Hab. Muxico, Matamoros Izucar, Jalapa (fe). 
Two specimens. Easily distinguishable by its broad, robust form and dense, 
uniform, greyish-white vestiture. 
5. Sibinia picturata, sp.n. (Tab. XII. figg. 6, 6a.) 
Subovate, piceous, the outer half of the rostrum, the antenne, and legs (except at the base) ferruginous or 
obscure ferruginous ; thickly clothed with elongate-oval, pale ochreous and purplish-brown scales, the 
darker scales so arranged as to form two broad vitte on the disc of the prothorax, and an irregular 
antemedian fascia and several interrupted lines on the elytra, the interstices of the latter each with 
a row of semierect setiform scales, the vestiture of the under surface and legs whitish or ochreous. 
*® This insect and various others quoted in the preceding pages were obtained by us from M. Donckier, of 
Paris; but there is reason to believe that they were found much further south, probably in Vera Cruz or 
Oaxaca, although all are labelled “Sierra de Durango.” 
