TRIBE XII. ANTHONOMINI. 305 



lack of frontal fovea, smooth beak and relative length of antennal 

 joints. In form and general appearance strongly resembles an 

 Apion. 



445 (10,996). ANTI-IONOMUS INTERSTITIALIS Dietz, 1891, 219. 



Elongate-subovate. Black, pubescence very fine and scant above, 

 side pieces of thorax and sides of abdomen densely clothed with pale 

 yellowish, scale-like hairs. Beak rather slender, punctured, the median 

 carina distinct. Head subopaque, finely alutaceous. Thorax but little 

 wider at base than long, sides strongly rounded and narrowed to tip; disc 

 rather sparsely, sides more densely punctate, the punctures variable in 

 size. Elytra oblong, at base one-third wider than thorax, sides nearly 

 straight, slightly divergent behind; striae feebly impressed, their punctures 

 rather distant; intervals nearly flat, the second, fourth and sixth wider, 

 the denuded fascia extending to the third. Hind femora not toothed. 

 Length 2 2.5 mm. 



Described from White Fish Point, Lake Superior, and Dis- 

 trict of Columbia. 



GROUP E. 



Species 2.5 3 mm. in length, having the third and fourth 

 ventral segments equal in length or nearly so, and slightly shorter 

 than in the two preceding groups; the fifth ventral of male longer 

 than fourth. (Fig. 79, d.) 



KEY TO EASTERN SPECIES OF GROUP E. 



a. All the thighs armed with a single acute tooth. 

 /;. Nearly uniform reddish-brown; front not foveate or sulcate. 



446. UNICUS. 

 bb. Black or piceous, often feebly bronzed. 



c. Front deeply foveate; color black. 447. NIGRINUS. 



cc. Front sulcate; color piceous or blackish with feebly bronzed 



lustre; legs in part yellowish. 



d. First joint of funicle long and slender; beak as long as head 



and thorax. 448. XANTHOCNEMUS. 



dd. First joint of funicle short, strongly clavate; beak scarcely 



longer than thorax. 449. VAEIPES. 



aa. Hind thighs without a tooth; black, shining; elytra with denuded 



fascia and spots and lines of white scales. 450. SCUTELI.ATUS. 



446 ( ). ANTHONOMUS UNICUS sp. nov. 



Oblong-oval, rather robust. Reddish-brown; antennal club and a large 

 common faint blotch just behind scutellum fuscous; above very sparsely 

 and evenly clothed with fine white, prostrate hairs; scutellum, sternal 

 side pieces and sides of abdomen rather thickly clothed with shorter white 

 pubescence. Beak rather stout, cylindrical, as long as head and thorax, fe- 

 male, one-fourth shorter, male, feebly carinate, finely and sparsely punc- 

 tate. Antennae inserted at apical fourth, male, third, female; first joint of 



