86 
Thomas C. Barr, Jr. 
only 2-3 clearly impressed inner striae; apical recurrent groove ending 
blindly, not connected to 3rd stria. 
Description. — Length 4.0-4. 1 mm (N = 3). Form about as in 
hypolithos but head and pronotum narrower and elytra wider, pubes- 
cence rather dense. Head 1.15-1.25 longer than wide; labrum with sug- 
gested very low and wide median lobe; last segment of maxillary palp 0.3 
longer than penultimate segment; antenna 0.6 body length. Pronotum 
0.85-0.87 as long as wide, anterior angles somewhat rounded, hind angles 
acute (2 of 3 specimens) or obtuse (1 specimen), large and sharp, basal 
angles as in P. hypolithos', apex width slightly more than base width and 
0.75 greatest width, which occurs in apical fifth at level of anterior margi- 
nal setae; disc irregularly with 1 long seta each side. Elytra short, 1.6 
times longer than wide, elongate-oval, prehumeral borders oblique, 
humeri slightly rounded, apexes much rounded; inner 2 striae more 
deeply impressed than 3rd stria, but all very fine, intervals essentially flat, 
outer striae obsolete; apical groove elongate, bisinuate, ending blindly at 
level of 7th umbilicate puncture. Aedeagus 0.63 mm long in paratype, 
median lobe less arcuate, apex produced, slightly sinuate in lateral view, 
narrowly and bluntly rounded at tip. 
Type series. — Holotype male (American Museum of Natural History) 
and two male paratypes. Limestone Cave, on the northwest slope of Pine 
Mountain, 2.5 km NNW of the common corner of Whitley Co., Ken- 
tucky, and Campbell and Claiborne cos., Tennessee, in Whitley Co., 
Kentucky (Jellico East IVi Quadrangle, 36‘^36'38" X 84°01'10", elev. 420 
m), 8 August 1979, T. C. Barr, Jr. 
Measurements (mm). — Holotype, total length 3.95, head 0.81 long X 
0.73 wide, pronotum 0.72 long X 0.84 wide, elytra 2.14 long X 1.32 wide, 
antenna 2.57. 
Discussion. — Pseudanophthalmus calcareus is readily distinguished 
by the slender head and pronotum and relatively short, broad elytra 
which are widest just behind the middle; the widest part of the pronotum 
is at the level of the anterior marginal setae. The three specimens of the 
type series were collected in the entrance room of Limestone Cave under 
rocks on damp silt in areas rich in organic debris (cave rat nest debris, 
rotting wood, etc.). This seems to be a pattern for species of this group 
— close to food sources near entrances, at least in summer. J. R. Hol- 
singer and I carefully searched the entire cave in November 1979, finding 
no beetles; apparently cold, dry air moving into the cave from the exte- 
rior rendered accessible microhabitats in the entrance room unsuitable. 
Pseudanophthalmus frigidus, new species 
Figs. 30, 36 
Etymology . — Latin frigidus, “cold.” 
