236 
Psyche 
[December 
subdensely clothed with dark, appressed hairs similar to those 
of other parts of the body but mostly shorter and finer. The 
carapace depressed, the head region not set off by distinct furrows 
and no stria thoracica evident, subovate in outline; pars cepha- 
lica narrowed forward, with anterior corners widely rounded. 
Eyes on a somewhat darkened area; removed from anterior 
border of head, as viewed from above, by only slightly more 
than the length of the eye-row, though without measurement the 
distance appears greater; eyes circular, separated by less than 
their diameter, the light, pupillary areas separated in dorsal 
view by about their diameter. Labium rather broad, apically 
rounded. Endites rather long, bent over the labium and nearly 
meeting in the middle line in front of it. Chelicerse with claws 
slender; upper margin of furrow with a low membrane over 
most of the length, the lower margin with a shorter but higher, 
distally rounded, membranous appendage. Sternum weakly 
convex, in outline subelliptic but more strongly narrowed cau- 
dad than cephalad, the caudal end acute. Abdomen narrowly 
elliptic or subfusiform, pointed at both ends. First and second 
legs decidedly more robust than the third and fourth, but the 
fourth longer than the first. All coxae moderately long, the first 
and fourth longer than second and third. Paired claws of legs 
with six long teeth in single series. Unpaired claw on all legs 
well developed, smooth and untoothed. The appendage at base 
of tarsi I and II elongate, narrowly oblong in outline but distally 
pointed and somewhat curved. In leg I the tarsus is clavately 
thickened distad; its distal division, exclusive of claws, about 
half as long as the proximal division. 
Total length, 4.75 mm. Length of cephalothorax, 1 . 9 mm. ; 
width, 1.37 mm. Length of leg I (inclusive of coxa), 5.74 mm.; 
tib. + pat., 1.9 mm. Length of leg IV, 6.86 mm.; tib. + pat. 
IV, 2. 1 mm. 
Locality. — Utah: Emery Co., San Rafael Desert at Straight 
Wash., April, 1928. Holotype, a female, in author’s collection. 
