226 PROCEEDINGS OF THE NATIONAL MUSEUM Vou. 113 
Measurements: The following measurements were taken from 2 
males and 2 females from Dallas, Tex. (USNM), 1 male and 1 female 
from ‘“‘Va.”? (USNM). All measurements are in millimeters: 
Males Females 
Mean Extremes Mean Extremes 
Body length 2. 40 2. 30-2. 50 2.43 (2. 20=2560 
Elytra length 1 283 1. 65-1. 80 1.70 = 1. 60-1. 90 
Elytra width at base TO 1. 00-1. 03 1.07. 1.00015 
Prothorax length 0. 60 0. 59-0. 63 0.60 0. 56-0. 66 
Prothorax width 0. 68 0. 66-0. 69 0.72 0. 63-0. 79 
Rostrum length 0. 82 0. 79-0. 86 0.81 0. 73-0. 89 
Rostrum length before antennal 0. 26 0.27 0. 23-0. 33 
insertion 
Funicular segment, 2 length 0.056 0.051-0.068 0.051 
Funicular segment, 3 length 0.045 0..034-0.051 0.039 0. 034-0. 051 
Biotocy: The host-plant records which follow were taken from the 
material examined: “Bred Cuscuta gall’? Dallas, Tex., May 15 (US- 
NM); “on Vachellia farnesiana” Point Lavaca, Tex., July (USNM); 
‘in dodder galls” Gardena, Walla Walla Co., Washington, Sept. 1 
(USNM). 
Discussion: This species is one of the few species, in the S. sculpti- 
collis group of species, in which the elytral scales are evenly distributed. 
However, the general body shape and proportions, sculptured pro- 
thorax, and moderately curved, ecarinate rostrum of S. interruptus 
are all characteristic of the S. sculpticollis group of species. 
Distrripution: This species has been recorded from localities in 
the Great Plains, the Gulf coastal plain, and the central lowlands 
region. Considering the other records, it seems probable that the 
“Va.’”’ specimens were taken on either the Atlantic coastal plain or the 
Piedmont Plateau. Several specimens were recently collected at a 
single locality on the Columbia Plateau in Washington. The speci- 
mens examined are as follows: 
TEXAS: CALHOUN Cco.: Point Lavaca, July 27 (USNM). pbatuas co.: Dallas, 
May 15 (USNM). Virarnia: ‘“Va.,”’ Aug. 21 (USNM). 
WASHINGTON: WALLA WALLA Co.: Gardena, Sept. 1 (USNM). 
Total specimens examined: 16. 
Smicronyx congestus Casey 
Ficurss 57, 109 
Smicronyx congestus Casey, Ann. New York Acad. Sci., vol. 6, pp. 401-402, 1892. 
Lectotype, here designated: Female, District of Columbia, USNM 36709 
(T. L. Casey collection). 
Description: Body reddish brown, except underside of thorax and 
abdomen, which are piceous. Rostra of both sexes reddish brown, 
moderately curved, subcarinate dorsally and laterally; more tapered 
and smoother before antennal insertions in female. Head finely 
