14 
Rowland M. Shelley 
Endomerite subequal in length to tibiotarsus; medial lamina 
longer, with rounded basal lobe overhanging and partly 
obscuring inner margin of endomerite (Fig. 5); north- 
eastern Washington, northern Idaho, and western Mon- 
tana to Salt Lake County, Utah 
piger Chamberlin 
6. Endomerite subequal in length to tibiotarsus, distal lamina 
without modifications, not prolonged, inner margin 
smooth, entire (Fig. 17); Klamath County, Oregon 
inornatus , new species 
Endomerite longer than tibiotarsus, inner margin of distal 
lamina variously modified and prolonged, with or with- 
out teeth 7 
7. Distal lamina apically divided, medial part thin and nar- 
row, greatly prolonged and strongly decurved, without 
teeth (Fig. 11); Yakutat Bay, Alaska, to Douglas County, 
Oregon, and Whitman County, Washington 
insulanus Attems 
Distal lamina not divided, slightly to moderately prolonged, 
only slightly decurved 8 
8. Distal lamina directed at about a right angle from endo- 
merite stem, slightly prolonged and expanded basally 
into narrow lobe, without teeth; medial lamina narrow- 
ing greatly distad, with short apical tooth, not over- 
hanging endomerite stem (Fig. 15); Lincoln County, Oregon, 
to Marin and San Joaquin counties, California 
simplex Chamberlin 
Distal lamina curving gently away from tibiotarsus, mod- 
erately prolonged, with sharply acute basal tooth, with- 
out lobes, medial lamina greatly expanded distad, with 
apical tooth, overhanging and obscuring inner margin 
of endomerite (Fig. 13); southern British Columbia to 
Douglas County, Oregon bergrothi Chamberlin 
THE WESTERN SPECIES 
The Granulatus Group 
The most speciose lineage in Scytonotus, the granulatus group 
occurs in the eastern region and both areas in the western interior 
and is absent from the Pacific Coast. It is characterized primarily 
by the presence of two or three teeth, usually subequal in size, on 
