258 PROCEEDINGS OF THE NATIONAL MUSEUM Vou. 113 
Map 5.—Distribution of the specimens ex- 
amined of the profusus group of Sm1- 
cronyx. @, S. profusus. 
Smicronyx profusus Casey 
FicureEs 20-22, 70, 118 
Smicronyx profusus Casey, Ann. New York Acad. Sci., vol. 6, pp. 389, 390, 
1892. Lectotype, here designated: Male, Benson, Arizona, collected by 
G. W. Dunn, USNM 36701 (T. L. Casey collection). 
Description: Rostra of both sexes moderately curved, piceous to 
reddish brown; squamose, laterally carinate nearly to apex in male; 
smooth and sparsely punctate before antennal insertions, roughly 
punctate, but not carinate, behind antennal insertions in female. 
Head black, rugulose punctate, surface dull. Antennae piceous 
throughout, second funicular segment slightly longer than third 
segment. Prothorax black, shape and punctures as in group descrip- 
tion; scales mostly broadly ovate, a few elongate, brown or white in 
color, the white scales forming a complete median stripe and two 
incomplete lateral stripes. 
Elytra black to piceous, the intervals covered, in addition to usual 
row of narrow scales, with broadly ovate scales, which are mostly 
dark brown, but a scattered few are light brown. Underside of thorax 
and abdomen closely covered with broadly ovate pale brown scales. 
Femora stout, moderately clavate, piceous, densely covered with ovate 
yellowish brown scales and numerous setalike scales. Tibiae piceous; 
covered with a few elliptical and numerous linear scales, mostly light 
yellowish brown but sometimes white. Tarsi piceous, covered with 
small yellowish brown scales; first three segments short and broad, the 
fourth segment not projecting far beyond the third; claws small, 
nearly parallel, connate to near their middle. Internal sac of male 
