254. PROCEEDINGS OF THE NATIONAL MUSEUM Vou. 113 
Males Females 
Mean Extremes Mean Extremes 
Body length 2.31 2. 20-2. 70 2.63 2. 40-2. 80 
Elytra length 1.58 1. 50-1. 70 1.70 1. 50-1. 80 
Elytra width at base 0.95 0. 83-1. 06 1.05 1. 00-1. 13 
Prothorax length 0.60 0. 53-0. 66 0.68 0. 63-0. 73 
Prothorax width 0.65 0. 56-0. 73 0.68 0. 63-0. 73 
Rostrum length 0.82 0. 76-1. 00 1.00 0. 90-1. 10 
Rostrum length before antennal 0.25 0. 20-0. 33 0.38 0. 33-0. 43 
insertion 
Funicular segment 2 length 0.065 0. 051-0. 068 0.062 0. 051-0. 068 
Funicular segment 3 length 0.045 0. 034-0. 051 0. 051 
Brotocy: The following host-plant records are available for this 
species at present: ‘‘Dodder,” Raleigh, N.C. (ELS); “Bred Ambrosia 
stem,” Victoria, Tex., June 3 (USNM); “Mesquite,” Wilcox, Ariz., 
June 22 (Howden); ‘‘Acacia,”” Portal, Ariz., June 16 (Howden). 
Discussion: This species may be readily distinguished from the 
rest of the species in its group by the nearly quadrate patch of dark 
scales near the middle of its elytra. 
The body color of specimens from the easternmost part of the known 
range of S. quadrifer is darker and the dark patch less distinct than 
in specimens from more western localities, but no other differences 
between those populations have been observed by the writer. 
DistrisuTion: Present records indicate that the range of S. quad- 
rifer extends along the Gulf and Atlantic coastal plains from southern 
Texas east to North Carolina, and from southern Texas west into the 
southern portion of the basin and range province. The following 
specimens were examined: 
ALABAMA: MOBILE Co.: Oak Grove, June 17; Mobile, June 12, June 15 (USNM). 
ARIZONA: COCHISE co.: Huachuca Mountains, (USNM). G@rauam co.: Fort 
Grant, July 19 (USNM). santa cruz co.: Nogales, May 28, 29, 31, June 23 
(USNM). yavapal co.: Hot Springs, June 21 (USNM). 
LovuIsIANA: ST. TAMMANY PARISH: Covington, May 28; Pearl River, June 4 
(USNM). 
New Mexico: oTERo co.: White Sands, July 11 (Howden). 
TEXAS: CAMERON Co.: Brownsville, May 1 (USNM). puvat co.: San Diego, 
May 5, May 24 (USNM). Et paso co.: El Paso, July 8-9 (USNM). 31m wELis 
co.: Alice (USNM). vicroria co.: Victoria, June 3 (USNM). 
Total specimens examined: 37. 
Smicronyx intricatus Casey 
Ficuress 116, 155 
Smicronyx intricatus Casey, Ann. New York Acad. Sci., vol. 6, p. 390, 1892. Lec- 
totype, here designated: Male, El Paso, Texas, collected by G. W. Dunn, 
USNM 36702 (T. L. Casey collection). 
Description: Rostra of both sexes black, moderately curved, stout; 
roughly punctate, gibbous at base, thinly squamose to near apex in 
