462 CLASSIFICATION OP THE RHYNCHOPHOROUS COLEOPTERA. 



together being longer than the others separatel3\ The legs are 

 short, the tibiae truncate, feebly mucronate at tip, and with broad 

 distinct ayrbeiUes; the tarsi are broadly dilated, 3d joint deeply bi- 

 lobed as usual ; claws separate. 1 have named this genus Bathyris. 



B. dispar ; oblong oval, black, thickl}' covered with large dirty 

 brown scales, varied on the elj'tra 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 conlluent ; scutelluiu transverse, cinereous 

 scaly. Length 4-G"'" 



Arizona, Dr. Webb ; Texas, Dr. Horn. The specimen from 

 Arizona has the thorax at base as wide as the el3'tra, the hind an- 

 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. 1 have seen a nearly allied 

 species from the Argentine Republic. 



The Sitonini contain small species greatly resembling in form 

 Tanj-mecus of the family Otiorhynchidie, but ditferiug entirely by 

 the mentum being small, and the maxillie exposed ; the gular pe- 

 duncle is short and broad, but quite distinct, and is truncate at 

 the front margin. The mandibles are emarginate at tip, and have 

 no apical scar for the attachment of the deciduous piece which is 

 characteristic of the preceding family. The beak is short, broad, 

 flat and channelled above, emarginate at tip ; tlie antennal grooves 

 extend to the base of the mandibles ; they are deep and well de- 

 flued, and flexed obliquely downwards b^low the e3'es ; the eyes 

 are rounded ; the front margin of the prothorax is not lobed, and 

 not emarginate beneath. The front coxae are contiguous, the side 

 pieces of the metathorax are narrow and separate ; the ventral 

 segments less unequal than usual, the suture between the 1st and 

 2d siuuated. The tibiiS are truncate, at tip, the tarsi dilated and 

 brushlike beneath, the claws separate and simple. The elytra at 

 base are much wider than the prothorax, with the humeri oblique 

 and prominent ; wings developed in all of our species. 



