462 CLASSIFICATION OF THE RHYNCHOPHOROUS COLEOPTERA. — 
together being longer than the others separately. The legs are j: 
short, the tibiæ truncate, feebly mucronate at tip, and with broad A 
distinct corbeilles ; the tarsi are broadly dilated, 3d joint deeply bi- — 
brown scales, varied on the elytra with patches of paler cinereous, ; 
and with scattered darker scales; of these the most conspicuous 
is a lateral transverse spot in front of the middle ; a larger indis- | 
tinct apical blotch is marked with an oblique brownish line; the 
stria are represented by ten rows of quadrate punctures ; the outer 
one not abbreviated nor confluent ; scutellum transverse, cinereous — 
scaly. Length 4—6™™ oo 
Arizona, Dr. Webb; Texas, Dr. Horn. The specimen from ‘ 
Arizona has the thorax at base as wide as the elytra, the hind w 
gles being expanded, flattened and acute, with the side margin - 
acute ; the sides in front of the angles are straight and oblique. 
Four specimens from Texas, which I considered as females, have — 
the prothorax rounded on the sides, narrower in front, scarcely : 
subsinuate at base, which is not as wide as the elytra, with the : 
hind angles not prominent, but slightly rounded. The general 
form is therefore as in Eudiagogus. I have seen a nearly allied 
species from the Argentine Republic. eee 
The Sitonini contain small species greatly resembling in form : 
Tanymecus of the family Otiorhynchidz, but differing entirely by : 
the mentum being small, and the maxille exposed ; the gular p% 
duncle is short and broad, but quite distinct, and is trune 
the front margin. The mandibles are emarginate at tip, and Bo 
no apical scar for the attachment of the deciduous piece W 
characteristic of the preceding family. The beak is short, Dm 
flat and channelled above, emarginate at tip; the antennal 
extend to the base of the mandibles; they are deep and : 
fined, and flexed obliquely downwards below the eyes; the 
are rounded; the front margin of the prothorax is not lo 
not emarginate beneath. The front coxæ are contiguous, ™ 
pieces of the metathorax are narrow and separate ; the v : 
segments less unequal than usual, the suture between the 1st) 
2d sinuated. The tibiæ are truncate at tip, the tarsi di 
brushlike beneath, the claws separate and simple. : 
base are much wider than the prothorax, with the humeri 
and prominent; wings developed in all of our species. 
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