82 
Thomas C. Barr, Jr. 
short and moderately dense pubescence. Aedeagus of holotype 0.74 mm 
long, basal bulb not sharply set off from evenly arcuate median lobe, 
which is gradually attenuate and rounded at apex. 
Type series. — Holotype male (American Museum of Natural History) 
and one male paratype, Blair-Collins Cave, Scott Co., Virginia (Gate 
City 71 / 2 ' Quadrangle, 36''40'27" x 82°33"27", elevation 490 m), 17 July 
1979, T. C. Barr, HI; one female paratype, same cave, 6 November 1966, 
J. R. Holsinger; one female paratype from nearby Coley Cave No. 2, 
Scott County, Virginia, 3 June 1967, J. R. Holsinger. 
Measurements (mm). — Holotype, total length 4.97, head 1.04 long X 
0.80 wide, pronotum 0.86 long X 0.86 wide, elytra 2.75 long X 1.53 
wide, antenna 3.34, aedeagus 0.74. 
Discussion. — This species is known only from the Blair-Collins Cave 
system and from Coley Cave No. 2, which are developed in the Maryville 
limestone (Ordovician) along Moccasin Creek near Gate City, Scott 
County, Virginia (Holsinger 1975:267, 275). All four specimens in the 
type series were taken on mud banks in stream passages. The two males 
were collected in the lower stream passage of Blair-Collins Cave by 
Thomas C. Barr, III, at age 12 already an accomplished and indefatigable 
cave trechine collector, who reported that one of the beetles was observed 
seizing a predatory mite just before it was caught. 
Pseudanophthalmus cordicollis, new species 
Figs. 46, 54 
Etymology . — Latin cor, “heart”, + collum, “neck.” 
Diagnosis. — A large, elongate species with slender appendages, elon- 
gate head, small pronotum with convergent sides and obtuse hind angles, 
obsolescent elytral striae, and aedeagal apex simply attenuate. 
Description. — Length 4. 7-5.0, mean 4.8 mm (N = 4). Form slender 
and elongate, subconvex, appendages elongate and slender; pale rufotes- 
taceous, pubescent; elytral microsculpture finely transverse, shining. 
Head 1. 1-1.3 times longer than wide, mandibles unusually large, long and 
slender; labrum with prominent median lobe; maxillary palps with last 
segment about 0.4 longer than penultimate segment; antenna 0.6 body 
length. Pronotum cordiform, 0.9 as long as wide, widest in apical fifth; 
apex subtruncate, anterior angles rounded, sides convergent without 
sinuation, hind angles obtuse, secondary angles of base very small and 
rounded; disc with 3 long setae each side, otherwise subglabrous. Elytra 
subparallel, subconvex, 1.6 times longer than wide, widest at middle; 
prehumeral borders slightly oblique, humeri rather prominent but not 
angular, apexes attenuate; longitudinal striae feeble and irregular, inter- 
vals very flat (feebly subconvex in 1 of 4 specimens), with 2 or 3 rows of 
long pubescence per interval; apical groove elongate, subparallel, faintly 
