1968] 
Coyle — Spider Genus Atypoides 
175 
Atypoides would be misleading. The genus Antrodiaetus contains 
two groups of quite closely related species, some sympatric and some 
allopatric — once Antrodiaetus is revised a comparison with the 
differences between its species will be more informative. Samples 
from lower elevations on the western slope of the Sierra Nevada 
Mtns. should be studied to see more clearly what variation pattern 
accompanies such a wide elevational (and climatic) range. A more 
thorough search should be made in the foothills around the northern 
and eastern edge of the Central Valley for additional populations. 
Until these approaches shed light on this problem, I feel unjustified 
in describing the Sierran population as a good species. 
distribution. A coastal population in northern California west 
of the Central Valley as far south as the Monterey Peninsula. A 
Sierran population, apparently geographically isolated from the 
coastal population, in the Sierra Nevada Mtns. and western foothills 
(Map 1). There is no reason to doubt Rivers’ (1891) and Smith’s 
(1908) records of A. river si from the Monterey Peninsula.. Simon 
(1890) lists a record of A. riversi from the San Bernardino Mtns. 
and cites George Marx for the locality data. Smith’s (1908) mention 
of a report of A. riversi from the San Bernardino Mtns. probably 
refers to Simon’s paper. The validity of Marx’s record is rather 
doubtful. 
records. Coastal population: California. Alameda Co.: Berke- 
ley [sample-locality C], 3 cf, 3 9 (J. J. Rivers); Oct. 1919, 
(Dietrich) ; 9 9 (several dates and collectors). — Castro Valley, 6 
Apr. 1941, 4 9 (W. M. Pearce). — Oakland, 26 Feb. 1954 (R. O. 
Schuster, B. Adelson). — 'Humboldt Co.: 18 mi. W. of Willow 
Creek, 21 Aug. 1959, 2 9- — Miranda, [sample-locality A], 3 June 
1936, 9 9 (C. R. Crosby). — Marin Co.: San Geronimo, 27 Sept. 
1963, 9 (WI). — Mendocino Co.: Christine, 30 May 1936, 9- 
— Piercy, 23 July 1953 (WJG, JWG). — Santa Clara Co.: Black 
Mtn. (R. W. Doane). — Stanford Univ. campus, Feb. 1921 (J. 
C. Chamberlin). — Stevens Creek, 20 Apr. 1941, 2 9 (W. M. 
Pearce). — Santa Cruz Co.: Ben Lomond [sample-locality F], 25 
June 1952, 3 9 (WJG) ; 20 July 1953, 3 9 (WJG) ; 3 Apr. i960, 
2 9 (WJG, WI, Schrammel) ; 28 March 1921, 9 (O. E. Sette). 
— Felton, 16 Aug. 1959, 9 (VR, WJG). — 7 mi. N.W. of Santa 
Cruz on Empire Grade Rd., 23 June 1965, 9 (H. B. Leech). — 
2 to 5 mi. W. of Felton on Ice Cream Grade Rd. [sample-locality 
F], 1000-1700 ft., 14 Aug. 1967, 2 cf , 11 9 (FAC). — 1.6 mi. and 
4.0 mi. N. of Big Basin St. Pk. headqtrs. on Big Basin Highway 
[sample-locality D], 1500 and 1750 ft., 15 Aug. 1967, 5 12 9 
