Psyche 
[March 
12b. Long axis of ectal portion of conductor at almost right angles 
to axis of cymbium ( 1957a, figs. 38, 40) 13 
13a. Embolus more proximal, conductor with a longer ectal portion 
(figs. 38, 39) ; South Dakota to Utah at lower elevations 
E. wyuta Chamberlin and Ivie 
13b. Embolus more distal, conductor with a shorter ectal portion 
(1957a, figs. 40, 41) ; Alaska to Greenland, in Rocky Moun- 
tains above timberline and in spruce-fir forest, Minnesota, 
Pennsylvania. New England E. intrepida (Snrensen) 
14a. Epigynum with a light posterior transverse bridge (1957a, fig. 
55) y western states, rare in east . E. joshua Chamberlin and Ivie 
14b. Epigynum otherwise 15 
15a. Epigynum with an oval depression having dark marks of 
openings on the anterior of the depression (1957a, fig. 20); 
California E. selma Chamberlin and Ivie 
15b. Epigynum otherwise 16 
1 6a. Epigynum with a transverse swelling, with a seam on the 
anterior and openings on each end of seam (1957a, fig. 18); 
introduced in Oregon E. thoracica (Hahn) 
1 6b. Epigynum otherwise 1 7 
17a. Epigynum with distinct dark marks indicating openings 19 
17b. Epigynum with diffuse dark marks 18 
18a. Swelling of epigynum divided by a transverse groove (1957a, 
figs- 31, 32), spotted dorsal abdominal pattern (1957a, fig. 33) ; 
widespread throughout United States and southern Canada, 
Mexico E. inarm or ata (Hentz) 
1 8b. Epigynum swelling undivided with only a slight depression 
posterior ( 1957a, figs. 35, 36) , foliate dorsal pattern of abdomen 
( 1 95 7 a > fig- 37) y east of Rocky Mountains to Newfoundland 
E. tecta (Kevserling) 
19a. Dark mark of epigynum anterior to a light swelling (Fig. 2) ; 
Arizona, southeastern California E. maricopa n. sp. 
19b. Dark mark anterior to a transverse ridge 20 
20a. Posterior edge of dark mark of epigynum straight (1957a, fig. 
50) ; South Dakota to* Utah at lower elevations 
E. wyuta Chamberlin and Ivie 
20b. Dark mark dumb-bell shaped (1957a, fig. 52); Alaska to 
Greenland, in Rocky Mountains above timberline and in spruce- 
fir forest, Minnesota, Pennsylvania, New England 
E. intrepida ( Sorensen ) 
