448 
Psyche 
[September-December 
tudinal row. Sternum. Fig. 54. Posterior sigilla small to medium 
sized and well separated. Pedipalps. Figs. 78-79, 96-100. Tibia 
strongly swollen ventrally near distal end. Embolus base well sep- 
arated from ICS base. ICS ridge distally develops into thin keel 
which then disappears so that conductor tip is pointed. Inner (con- 
cave) edge of OCS nearly smooth to rough. Leg I. Fig. 92. Tibia 
and metatarsus with ventral, suberect, mostly attenuate macrosetae. 
Rest of metatarsus setae mostly long, slender, and suberect. Abdo- 
men. Figs. 45-46. Tergites I and III reduced to small patches or 
spots at bases of macrosetae. Coloration. Pars thoracica light yellow 
to pale yellow-brown. Pars cephalica darker ; light brown to medium 
brown; darkest along margin and median longitudinal line. Cheli- 
cerae like pars cephalica. Pedipalpal femur and patella dorsally a 
darker orange-brown or red-brown. 
Females: Carapace. Figs. 47-48. Thoracic groove a relatively 
small deep pit of varying shape; usually rounded anteriorly and 
tapered posteriorly; sometimes circular, elongate-oval, transverse- 
oval, or triangular. Postocular setae form narrow row which ex- 
tends back to a point Y to almost V2 of distance from anterior edge 
of carapace to thoracic groove. Sternum. Fig. 65. Posterior sigilla 
small to medium sized and well separated. All or nearly all per- 
ipheral sternal setae slender; a few may be moderately stout. Long- 
est setae scattered all over sternum, but more abundant anteriorly. 
Chelicerae. Figs. 39, 47-48. Genitalia. Figs. 121-131. Seminal re- 
ceptacle stalks weakly sclerotized, nearly constant diameter through- 
out length, long, and with 3 to 9 bends (usually 6 to 9 bends). 
Bulbs relatively small to medium sized, slightly less sclerotized than 
stalks. Coloration. Pars thoracica light yellow to light grey-yellow. 
Pars cephalica darker; often especially dark around margin and 
median longitudinal line; darker parts medium brown to darker red- 
brown ; lighter parts light yellow-brown to orange-brown. Chelicerae 
match darker parts of pars cephalica. 
Variation. Males: The coastal population samples average con- 
siderably larger in body part dimensions than the Sierran population 
samples, with the sharpest discontinuity being in PED, PTT, and 
ITarL (Fig. 10). Somewhat discontinuous geographic variation is 
found in the ratios CL/PPL (Fig. 11), CL/PTX (Fig. 12), and 
PPL/PFL. This and weaker variation in other characters show a 
recurrent pattern: some phenotypic discontinuity between the rather 
homogeneous coastal populations on the one hand and the Sierran 
populations on the other; considerable discontinuity between the two 
Sierran populations, with the coastal populations more similar to the 
