ANTHRIBIDAE. 529 



(iroup I. — Anthribi. 



These species are sufficiently distinguislied from Oraiopares by 

 .the third joint of the tarsi being not narrower than the second, 

 and quite visible from above; the second joint is broad, triangular, 

 and rather flat, emarginate at tip. The sides of the beak partly 

 cover the antennal cavities, which are large and deep, and but 

 slightly visible from above. The anteiuu^ are sometimes very 

 long in the S , and the first joint is stouter and shorter than usual. 

 The tarsal claws vary according to genus. Except in Anthribus 

 the antennal cavities are somewhat distant from the eyes. 



Hind angles of tlie protliorax not directed outwards. 2. 



Eyes emarginate, hind angles of i)rothorax directed outward ; front coxa- 

 contiguous. Eusphyrus. 



2. Front coxje contiguous or nearly so. ;;. 

 Front coxffi well separated by the prosternuni. 4. 



3. Claws almost cleft, body elongate-cylindrical, eyes emarginate. 



Phoenicobius. 



Claws feebly appendiculate, body stout, subcylindrical, eyes oval. 



Piezocorynus. 



4. Eyes rounded. Anthribus. 

 Eyes broadly emarginate. Toxonotus. 



No species has yet been found in the Pacific region. 



Group II. — Cratopares. 



The insects of this group, represented by only two species in 

 the Atlantic region, differ from the Anthribi, chiefly by the second 

 joint of the tarsi less dilated, longer, and though deeply emargi- 

 nate at tip, concealing the third joint so that the articulation is 

 not visible from above ; but merely the lobes, which do not extend 

 beyond the prolonged angles of the second joint. The beak is 

 flat and parallel on the sides; the antennal cavities extend to 

 the eyes, which are oval and coarsely granulated, somewhat trun- 

 cate in front. The side margin of the prothorax extends to about 

 the middle ; the base is slightly bisinuate, and the lower basal 

 margin is very well defined, so that when the prothorax is de- 

 flexed, it might be supposed that the transverse ridge was not 

 absolutely basal. The same is the case, though to a less extent, 

 in the genera of the preceding group. The front coxae are con- 

 tiguous, and the mentum is but feebly emarginate in our speci(!s; 

 the buccal fissures are rather wide. 

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