TRIBE XII. ANTHONOMINI. 275 



KEY TO GENERA OF ANTHONOMINI. 



a. Claws simple. 



l>. Prosternum long in front of the coxae, the latter very narrowly sepa- 

 rated; hind tibiae scarcely mucronate; elytra widely and separately 

 rounded at apex, exposing the pygidium; length 2.2 2.8 mm. 



I. ACALYPTUS. 



bit. Prosternum short in front of the coxae; hind tibia? mucronate. 

 c. Form convex; tibial spines distinct. 



(I. Antennal grooves directed beneath the eyes (Fig. 78, i); length 

 1.5 mm. II. EPHELOPS. 



dd. Antennal grooves directed against the eyes; length 2.8 mm. 



III. EPIMECHUS. 



cc. Form subdepressed; tibial spines very minute; antennal grooves 

 directed toward the eyes; length 1.5 1.8 mm. IV. XANTHUS. 

 aa. Claws not simple. 



e. Claws appendiculate, i. e., armed at base with a short broad tooth. 

 (Fig. 79, k.. I.) 



f. Hind femora thickened, saltatorial (Fig. 18, &.) ; eyes approximate 



above; beak in repose always folded on the breast. 



V. ORCHESTES. 



ff. Hind femora slender, normal; eyes not approximate above; pygi- 

 dium covered. (Fig. 79, /'. ) VI. ELLESCHUS. 

 ee. Claws armed with an acute tooth. 



g. Hind tibiae with a curved hook at tip. 



li. Pygidium wholly covered; tooth of claws long. 



i. Beak short and stout, about as long as thorax; first joint of 

 funicle scarcely as long as the next two united (Fig. 78, 7;.) ; 

 elytra not tuberculate; length 2.5 3 mm. 



VII. MACRORHOPTTS. 

 ii. Beak slender, two-thirds or more as long as body; first joint of 



funicle as long as the next four or five united (Fig. 78, d. ) ; 

 elytra strongly tuberculate; larger, 3 4.5 mm. 



VIII. TACHYPTERUS. 

 7*7;. Pygidium in part exposed, at least in male; tooth of claws short; 



funicle 6-jointed. (Fig. 78, k.) 



;'. Abdomen flat, its first and second segments very elongate 



(Fig. 79, e.); pygidium partly exposed in male; femora 



toothed; larger, 2.5 3.2 mm. IX. ANTHONOMOPSIS. 



jj. Abdomen convex, its segments less unequal; pygidium freely 



exposed in both sexes; femora not toothed; smaller, not 



over 1.5 mm. X. NAXOPS. 



gg. Hind tibiae with a short spine at tip. 



k. Antennal grooves directed against the eyes. 



I. Funicle 6- or 7-jointed; club elongate-oval. XI. ANTHONOMUS. 

 77. Funicle 5-jointed; club broadly oval. (Fig. 78, c.) 



XII. NEOMASTIX. 



kk. Antennal grooves directed beneath the eyes; funicle (5- (rarely 

 5-) jointed, the fourth joint smaller. (Fig. 78, j., I.) 



XIII. PSEUDANTHONOMUS. 



