SMICRONYX WEEVILS—ANDERSON 207 
from Vine Hill, Contra Costa Co., Calif. (CAS). All measurements 
in millimeters: 
Males Females 
Mean 8 Extremes Mean 8 Extremes 
Body length 2.64 0.110 2. 50-2.80 2.70 0.080 2. 50-2. 90 
Elytra length 1. 81 0.087 1.65-1.98 1.85 0.141 1.52-2.01 
Elytra width at 1.02 0.066 0. 86-1.09 1.04 0.077 0. 86-1. 09 
base 
Prothorax length 0.65 0.047 0.59-0.69 0.65 0.047 0. 56-0. 69 
Prothorax width 0.72 0.047 0. 63-0.76 0.75 0.057 0. 63-0. 83 
Rostrum length 0.87 0.033 0. 79-0.92 0.94 0.057 0. 83-0. 100 
Rostrum length 0.28 0.033 0. 26-0.30 0.34 0.018 0. 30-0. 36 
before antennal 
insertion 
Funicular segment 2 0. 051 0. 053 0. 034-0. 068 
length 
Funicular segment 3-0. 051 0. 049 0. 034-0. 051 
length 
Broutocy: There is very little information available on the biology 
of this species. Tilden (1951) reported taking a specimen of SV. 
cinereus from the foliage of Baccharis pilularis De Candolle in 
California, but he gave no other information. 
Discussion: It is unfortunate that the type specimen or series 
was not available for examination or comparison, but A. Zhelokovtsec 
of the University of Moscow Zoological Museum stated (in a letter to 
Dr. H. Dietrich of Cornell University) that the type of S. cinereus could 
not be located in the Motschulsky collection or in the Eschscholtz 
collection (which was mentioned in the original description). Further 
search may reveal that Motschulsky placed the types in some other 
collection or that in some way they became located at another museum 
in Russia. The present interpretation of this species follows that of 
LeConte (1876), Casey (1892), and Dietz (1894). 
The lectotype of S. perplerus Dietz is evidently conspecific with S. 
cinereus Motschulsky and the former has been placed in synonymy 
with the latter. 
Distrisution: Records taken from the material examined indicate 
that S. cinereus may be found in the Pacific mountain system, pri- 
marily in valley regions. ‘The specimens examined are as follows: 
British CotumsBia: Gordon Head, Aug. 17 (CNC); Victoria, May 15 (CNC). 
CALIFORNIA: ALAMEDA Co.: March 26 and 29, April 138, May 2 and 10, June 4, 
Sept. 25, Oct. 8 (CNHM), July (CAS); Arroyo Valle, March 15 (USNM); Berkeley, 
April 11 (CNHM), March 25, April 10 (USNM); Hills back of Oakland, March 
26-27, June 5 (USNM); Piedmont, Feb. 27 (CNHM); Pleasanton, April 28 
(USNM). contra costa co.: April 12, May 23 (CNHM); Alhambra Valley, 
July (CAS); Vine Hill, June 7, Dec. 28 (CAS). HUMBOLDT Co.: May 20 (CNHM); 
Eel River near Hartsooks, June (USNM); Redwood Creek, June 5 (CNHM). 
KERN Co.: Bakersfield, May 5 (USNM); Glennville, May 7 (USNM). Lassen 
