206 PROCEEDINGS OF THE NATIONAL MUSEUM Vou. 113 
4. Sides of prothorax subparallel from base to point at which they converge 
toward apex; scales of prothoracic disk oriented toward the midline; 
antennal club reddish brown ....... S. cuscutiflorae Pierce (p. 211) 
Sides of prothorax distinctly rounded behind the point of convergence; 
scales of the prothoracic disk oriented toward the apex; antennal club 
blackto! piceous es 6%. 5) Seas ek Gis Maw, Ble aleical fo ee 3 Pedic cute eee eo 5 
5. Reddish area of each elytron confined to a vitta, which extends from the base 
to near the declivities along intervals 4 to 6; scales of underside light gray. 
S. obscurus new species (p. 213) 
Reddish area of each elytron rather general, covering all but a broad dark 
sutural stripe and the outside margins; scales of underside distinctly brown. 
S. tardus Dietz (p. 209) 
Smicronyx cinereus Motschulsky 
Ficures 11-12, 50, 103 
Micronyz cinereus Motschulsky, Bull. Soc. Imp. Nat. Moscou, vol. 18, no. 2, p. 
376, 1845. Type: Sex unknown, California; supposed in Univ. of Moscow 
Museum collection, but could not be found at that institution. 
Smicronyx perplexus Dietz, Trans. Amer. Ent. Soc., vol. 21, pp. 138, 139, pl. 7, fig. 
12, 1894. New synonymy. Lectotype, here designated: Female, ‘‘Cal.”; 
Carnegie Museum (Ulke collection). 
Description: Rostra of both sexes black, moderately curved, stout, 
distinctly carinate medially and laterally, rugosely punctate, closely 
squamose dorsally and laterally from base to near apex; only slightly 
smoother before antennal insertion in female than in male. Head 
black; punctulate, thinly squamose in front. Antennae piceous 
throughout; club elongate oval and silvery pubescent. Prothorax 
black, moderately rounded at the sides, narrowed and slightly con- 
stricted near apex, disk evenly covered with deep punctures, inter- 
spaces shining; scales ovate, mostly medium yellowish brown, but a 
few white, condensed into a poorly defined white spot on each side of 
the disk. Setiform scales medium brown. 
Elytra black, intervals covered with ovate scales of same colors as 
those on thorax, but with white scales scattered among the brown. 
Femora piceous, moderately clavate, covered with yellowish brown 
elliptical scales. Tibiae stout, piceous, covered with elongate yellow- 
brown scales. Tarsi black, densely covered with yellowish brown 
scales; third segment not much broader than first two; fourth segment 
extending well beyond third; claws connate for approximately half 
their length; slightly divergent. Median lobe as in group description 
but widened toward the apex, internal sac armed with fine spines 
(fig. 50). Stem of the spiculum ventrale of female genitalia slightly 
expanded at the anterior end (fig. 103). 
MeasureMENts: The following measurements were taken from 5 
males from Contra Costa Co., Calif. (CNHM), 1 male from Alhambra 
Valley, Contra Costa Co., Calif. (CAS) plus 4 males and 10 females 
