fiO JOHN B. SMITH. 



is widely distributed, but does not seem to be common anywhere. Mr. 

 Kiley says that it probably bores in the stalks of potato vines. 



A. fraterniim n. sp. — Black, slightly aeneous, pubescence fine or entirely 

 wanting; of the same form and general appearance as the preceding. Head 

 transverse, eyes prominent. Thorax distinctly widest at base, else all as before. 

 Length 2.25 mm. 



Hah. — Southern and Western States. 



Readily distinguished from the preceding by the almost entire lack of 

 pubescence, and the somewhat aeneous color. Mr. Riley says it is found 

 in Phaseolus panciflora, and from the number in his collection it appears 



to be common. 



Group trog-lodytes, Plate III, Fig. 17. 



This group is closely related to the preceding, while at sight obviously 

 distinct from it in its narrower and generally more cylindric form ; each 

 of the species has a peculiar fticies, readily recognized, and while trog- 

 lodytes enjoys a very large range of variation, there is scarcely a proba- 

 bility of mistaking a specimen for anything else. 

 . The species may be separated as follows : 



Densely pubescent; pubescence pale, white. 



Basal joint of antennae yellow ; rostrum of 9 f>ften very long and slender, 



intervals of elytra fiat, 1 — 1.5 mm varicorne. 



Antennae entirely black. 



Humeri distinct, elytra scarcely longer than wide. 1 — 1.5 troglodyteiS. 



Humeri small, elytra much longer than wide, 2 mm ex ten Mil ill. 



Sparsely or not at all pubescent. 

 Humeri distinct, form robust. 



Color brassy, intervals of elytra wide, flat, 2 ram aeiieipenne. 



Color black, intervals of elytra narrow, convex, 2 mm contilKlliil. 



Humeri small, form more slender. 



Rostrum slender, often very elongate in 9 '■ intervals of elytra narrow, con- 

 vex, 1.5 mm teiiuirostpuiii. 



Rostrum unusually short and stout, 1.5 mm atteiiuatuiii. 



A. varicorne n. sp.— Black, antennae piceous, basal joint yellow, densely 

 pubescent. Head rather longer than wide, scabrous and punctured, distietly suleate 

 between the eyes, the latter not prominent; antennae rather short, basal joint 

 longest. Thorax wider than long, distinctly widest at base, densely punctured, 

 without basal fovea or impressed line. Elytra one-half longer than wide, slightly 

 ovate, humeri not prominent, striae distinct, but rather shallow, punctures evi- 

 dent, intervals flat. Beneath sternum longitudinally rugose, abdomen densely 

 punctured. Length 1 — 1.5 mm. 



Hah. — Southern and Western States. 



This species may be confounded with temdrostre at first sight ; the 9 ? 

 have the same long rostrum, and the form of the thorax is very much 

 alike. The pubescence varies somewhat in density, and the elytra some- 



