CURCULIONIDAE. 483 



6. Tips of elytra conjointly rounded. Tychius. 

 Tips of elytra separately rounded. 7. 



7. Claws toothed. Sibynes. 

 Claws simplex. Paragoges, 



Sibynes and Paragoges occur in California, Tycbins in both 

 regions; tlie other genera are confined to the Atlantic region. 



Tribe XII.— CIO^VINI. 



In tins trilie the funiele of the antennte has but five joints; the 

 club is either articuhited or annulated. The front coxte are very 

 large and promnient, contiguous in some of the genera, separate 

 in others; the claws are simple, approximate, free in Miarus, but 

 connate in the other genera. 



The form is robust, the beak cylindrical; antennte inserted at 

 about two-thirds the length ; the scape attains the anterior margin 

 of the eyes, which are oval, transverse and moderate in size, and 

 widely separated above and below. The front coxte are large, and 

 the sternum is short both before and behind ; the middle and hind 

 coxiB are separated, the side pieces of the metasternum narrow, 

 and the margin of the elytra not sinuate; the side pieces of the 

 mesosternum do not intervene between the base of the prothorax 

 and the elytra. The ventral segments are not very unequal in 

 length, though the third and fourth are a little shorter; the sutures 

 are deep and angulated in the first two genera, but only slightly 

 curved in Gymnetron and Miarus. 



The species in our fauna indicate four genera : — 



Pygidium covered. 2. 



Pygidium exposed, antennal club annulated. 3. 



2. Antennal club articulated. Nanophyes. 

 Antennal club annulated. Cionus. 



3. Front cox.-e contiguous. Gymnetrou. 

 Front coxa; separate. Miarus. 



With the exception of one species of Miarns from the Atlantic 

 region, these genera are represented by single European species, 

 which occur in the Atlantic States. 



Tribe XIII.— TRYPETIXI. 



This tribe contains a few rather elongate, dein-essed, glabrous 

 species, with cylindrical beak, less slender in the nude than in 



