52 
Psyche 
[March 
7(6) Transverse strigae of pronotum regular and distinct; anten- 
nae slender, reaching to anterior third of elytra when laid 
back ; elytral apex evenly rounded in the male ; Grundy and 
Franklin counties, Tennessee, to north-central Jackson Co., 
Alabama hatchi Jeannel 
7' Transverse strigae of pronotum irregular and dissociated, 
rather superficial; antennae thicker, reaching only to base of 
pronotum when laid back; elytral apex angular in male; 
Dade Co., Georgia whiteselli n. sp. 
8(6) Antenna longer, easily reaching beyond base of pronotum; V, 
VI, and VII slender, VIII small but not transverse, almost 
as wide as long 9 
8' Antenna shorter, scarcely reaching the base of the pronotum ; 
V and VI dilated, VII greatly enlarged, VIII very trans- 
verse (twice as wide as long) ; Madison Co., Alabama 
laticornis Jeannel 
9(8) Color reddish-brown; body robust; VII and VIII enlarged; 
posterior pronotal angles relatively blunt; DeKalb and Wil- 
son counties, Tennessee hubrichti Barr 
9' Color pale testaceous or rufotestaceous; body slender; VII 
and VIII not appreciably enlarged; posterior pronotal angles 
sharper; northeast Alabama henroti Jeannel 
10(5) Size larger (2. 8-3. 5 mm) ; pronotum distinctly wider, the 
transverse strigae fine but distinct; elytral strigae very fine 
and superficial 1 1 
10' Size small (2. 2-2. 5 mm) ; pronotum narrower, with trans- 
verse strigae superficial and dissociated on the disc; elytral 
strigae deeper and more distinct; northeast Alabama 
valentinei Jeannel 
11 (10) Elytral apices subtruncate in the male; northeast Alabama 
loedingi Hatch 
11' Elytral apices rounded in the male; Franklin Co., Tennessee 
fecundus n. sp. 
The above key is a tentative one, since there are probably several 
undescribed species of Ptomaphag.us which occur in the caves of the 
United States. Most of these will be species which have pigmented 
eyes, will be most abundant in the twilight zone, and will key out 
near P. cavernicola. I have seen scattered material of this nature from 
caves in Florida, Texas, and Alabama. 
hirtus group 
Elytral apex rounded in the male, obliquely truncate in the female; 
transverse strigation of pronotal disc greatly reduced in some species. 
