126 
margin is straight, and the posterior angles are very nearly right 
angles; the upper surface is nearly flat, being but very slightly con- 
vex, and thickly but rather finely punctured. The elytra are mode- 
rately elongated, but little broader than the thorax, and moderately 
convex above; the sides are nearly parallel, being very little dilated in 
the middle; the apical portion is rounded; they are punctate-stri- 
ated, and the interstices are finely punctured; a series of small 
blackish spots is observable on each of the striz ; on other parts the 
very minute hairs which cover the elytra are brownish. 
ApIorisTuUs SIMPLEX. Ad. piceo-niger, pilis fuscescentibus tectus ; 
antennis piceis ;*rostro brevi, carinato, ad basin transversim im- 
presso; thorace rugoso-punctato, subcylindraceo, lateribus pauld 
rotundatis ; elytris oblongo-ovatis, punctato-striatis, punctis ali- 
quantd profundis, interstitiis fere planis et punctulatis. 
Long. corp. et rostri, 33 lin.; lat. 12 lin. 
Hab. Valleys of Petorca. 
A small species, about equal in size to Phyllobius alneti. The 
rostrum short and stout, being but little longer than the head, is 
furnished with a central carina and a carina on each side, which is 
less distinct, and the space between these ridges has longitudinal 
ruge, which are partially hidden by the scattered hairs which cover 
this and all other parts of the body. The head is thickly punctured, 
and the punctures are confluent; a small oblong impression is ob- 
servable between the eyes, and in front of the eyes is a transverse 
depression, separating, as it were, the rostrum from the head. The 
thorax is nearly cylindrical, broader than long, and slightly nar- 
rower behind than near the fore-part; the anterior and posterior 
margins are straight ; the upper surface is thickly and rather coarsely 
punctured, and the punctures are many of them confluent. The 
elytra are of an elongated ovate form, convex, somewhat attenuated, 
but rounded at the apex; punctate-striated, the punctures mode- 
rately large and rather deep, and nearly joining each other; the 
interspaces between the striz are nearly plane, indistinctly punc- 
tured in parts and slightly rugose; the minute but somewhat spiny 
hairs which cover the elytra are not sufficiently abundant to hide 
the sculpturing, and are semi-erect. 
A species of the present genus is contained in Mr. Darwin’s col- 
lection, which differs from either of the above: it is almost destitute 
of the small hairs which give the brownish colouring to the other 
species here described. 
Aproristus suBDENuUDATUS. Ad. oblongus, niger, pilis minutissimis 
atque squamulis albescentibus adspersus ; antennis tarsisque fus- 
cescentibus ; rostro carinato, punctulato ; capite inter oculos trans- 
versim impresso, crebré punctulato ; thorace subcylindraceo in 
medium pauld dilatato, punctis minutis impresso ; elytris oblongo- 
ovatis, punctato-striatis, interstitiis pauld conveais, obsolete punc- 
tulatis. 
Long. corp. et rostri, 6} lin.; lat. 23 lin. 
Hab. Mendoza. 
