280 RHYNCHOPHORA. 
broader than the prothorax, oval, gradually acuminate behind, the humeri obtuse ; shallowly and rather 
finely punctate-striate, the strie regular at the base, the interstices feebly convex and densely punctulate. 
Anterior tibize unguiculate. 
Length 103, breadth 4 millim. (9?) 
Hab. Mexico, Ciudad in Durango (forrer). 
One specimen. ‘This insect has quite the facies of a Sitones or Tanymecus. 
Compared with WV. auropictus and N. delumbis ( 2 ), it has the elytra more rounded at 
the sides, less abruptly acuminate at the tip, and more shallowly punctate-striate ; 
the larger punctures on the prothorax not so deeply impressed. The male is doubtless 
narrower. ‘The specific name was suggested long ago by Dr. Sharp. 
MAZENES, gen. nov. 
Rostrum subquadrate, a little longer than broad, widened outwards, hollowed down the middle to the 
inter-ocular fovea, and with the depression limited on each side by a stout oblique ridge, which extends 
forward to above the points of insertion of the antenne, the nasal plate triangular, the gene emarginate, 
the scrobes lateral, deep, and descending to beneath the eyes, the latter moderately large; antenue 
rather stout, the scape not extending beyond the eyes, widened from near the base or subclavate ; 
prothorax long, cylindrical or subcylindrical, constricted in front, truncate or feebly bisinuate at the 
base ; scutellum visible ; elytra elongate, 10-striate, the striz placed in pairs between the alternately 
raised interstices and their position indicated by very fine impressed lines visible through the dense 
vestiture, the outer stris approximate or coalescent from about the basal fourth, the small seriate 
punctures each placed in a foveiform depression, the humeri obtuse or subangular; mesothoracic epimera 
narrow, oblique ; metathoracic episterna narrow, dilated inwardly in front; legs stout ; femora unarmed ; 
tibize closely setose and obsoletely denticulate, the anterior and intermediate pairs unguiculate, the 
posterior pair laminate at the apex, their articular surface large, cavernous, and not entirely glabrous ; 
body elongate, apterous *, squamose. 
Type, WM. bifoveatus. 
The three species belonging to this genus agree remarkably well inter se, not only 
in the general form of the rostrum, the peculiar elytral sculpture, &c., but in having 
two small, longitudinally placed, bare, polished foveee on the disc of the prothorax. 
The meso- and metasternal side-pieces are shaped as in the winged Otiorhynchids, and 
there is a distinctly visible scutellum, though the wings are doubtless wanting or 
rudimentary and the elytra connate. ‘These insects are from Mexico or Guatemala, 
and all of them appear to be very rare. Pactorrhinus, Ancey, type P. grisescens, 
from Arizona [Le Naturaliste, i. 485 (Oct. 1881)], may be an allied genus f. 
1. Mazenes bifoveatus, sp. n. (Tab. XIII. figg. 4, 4a.) 
Elongate, narrow, black ; thickly clothed (except on the raised portions of the prothorax and on the convex 
elytral interstices 3, 7, and 9) with pale brown imbricate scales, with a few white scales intermixed, 
these latter becoming more numerous on the under surface and condensed into a sharply-defined stripe 
down the fifth elytral interstice; the apical portion of the elytra also set with stiff decumbent setee, 
similar to those on the legs, Head and rostrum densely, finely punctate, the rostrum excavate on each 
* Not definitely ascertained, owing to want of material. 
+ This insect does not appear to have been identified or noticed by American coleopterists. It is referred 
to the “ Naupactides” of Lacordaire, and stated to be not unlike a Cleonus. 
