48 
Thomas C. Barr, Jr. 
datus, with moderately large apical blade, the apex unusually narrow and 
rather feebly arrow-shaped when seen from above. The holotype male, 
originally in my collection, has been deposited in the American Museum 
of Natural History. The species was described on a pair of specimens, and 
only one additional male has been taken (September 1979, R. Wallace 
and T. Barr). 
Pseudanophthalmus holsingeri Barr 
Barr 1965:63. 
Length 4.2-5. 4, mean 4.8 ± SD 0.3 mm (N = 38). Head 1.2 times as long 
as wide, labrum singly emarginate or (often) with low and wide median 
lobe. Pronotum transverse-cordiform, greatest width in apical fourth 
behind anterior marginal setae, hind angles large, more or less right (but 
often slightly obtuse), secondary basal angles small but conspicuous. 
Elytra 1.6 times longer than wide, prehumeral borders oblique, humeri 
prominent though a little rounded; disc subconvex, flatter near middle, 3 
longitudinal striae present and traces of outer striae, intervals flat to 
weakly convex; apical groove elongate, bisinuate, running to 3rd stria 
apex via crosier at level of 7th umbilicate; pubescence dense but rather 
short. 
This species is known only from the Young-Fugates Cave system near 
Gibson Station, western Lee County, Virginia, where it is relatively 
abundant. From the majority of species of ihQ engelhardti group it differs 
in having the aedeagal apex deflexed and simply and finely truncate 
(lateral view), but without a sharp ventral cusp. 
Pseudanophthalmus nortoni, new species 
Figs. 2, 7 
Etymology. — Patronymic honoring Mr. Russell M. Norton, discov- 
erer of this and many other species of cave beetles. 
Diagnosis. — Similar to P.fulleri, differing in the perpendicular pre- 
humeral borders of the elytra, deeply impressed elytral striae, and 
strongly arcuate aedeagus. 
Description. — Length of unique holotype 4.28 mm. Form robust and 
subconvex. Head rounded, as wide as long; labrum strongly trilobed in 
anterior margin; genae subglabrous; 3rd segment of maxillary palp 0.75 
as long as 4th segment; antenna 0.6 body length. Pronotum transverse- 
subquadrate, 0.9 as long as wide, anterior angles prominent, apex 0.9 as 
wide as base, base 0.8 greatest width, which occurs in apical fourth 
behind anterior marginal setae; sides subparallel in basal fifth, hind 
angles slightly more than right, sharp and slightly produced, secondary 
angles of base prominent; disc with one long seta each side, otherwise 
