Appalachian Pseudanophthalmus 
65 
convex, with 2-3 rows of pubescence per interval; apical groove elongate, 
bisinuate, oblique to suture, connected to 3rd stria by crosier. Aedeagus 
0.49-0.53 mm long, evenly arcuate, apex simply rounded as in P. hirsutus 
and P. digitus, slightly larger than in P. digitus. 
Type series. — Holotype male (American Museum of Natural History) 
and 5 paratypes. Blowing Cave, in town of Sequatchie, Marion Co., 
Tennessee (Sequatchie IVi Quadrangle, 35°07T4" x 85®35"39"), 29 
August 1968, S. B. Peck. 
Measurements (mm). — Holotype, total length 3.96, head 0.92 long X 
0.70 wide, pronotum 0.73 long X 0.86 wide, elytra 2.23 long X 1.25 wide, 
antenna 2.88. 
Discussion. — This species is known only from the type locality, the 
outlet of a subterranean stream on the west side of the Sequatchie Valley. 
It is closely similar to P. digitus, which occurs about 25 km southeast in 
another, parallel, anticlinal valley. The species is a little more densely 
pubescent than P. digitus, and there is a slight subapical sinuation in the 
elytral margin. More conspicuous character differences are cited in the 
diagnosis. 
Pseudanophthalmus assimilis, new species 
Fig. 25 
Etymology. — Latin assimilis, “similar.” 
Diagnosis. — Similar to P. digitus, differing in less deeply sinuate 
pronotum sides with obtuse hind angles, secondary basal angles less 
prominent, outer longitudinal striae of elytra less regular, apical groove 
more deeply impressed, and aedeagus less arcuate, middle part of median 
lobe straighter. 
Description. — Length 4. 2-4.4 mm (N = 4). Form slender, depressed, 
pubescent; rufotestaceous, shining; elytral microsculpture very fine, 
dense, transverse-obsolescent. Head about 1.15 times longer than wide, 
labrum margin with prominent, broad, median lobe; maxillary palp with 
penultimate segment 0.8 as long as last segment; antenna 0.7 body length. 
Pronotum 0.9 as long as wide, cordiform, sides barely sinuate in basal 
fifth, hind angles obtuse and sharp, secondary angles of base subdued; 
greatest width in apical fifth, base width slightly greater than apex width 
and about 0.7 maximum width; 2-4 long setae on each side of disc in 
addition to sparse micropubescence. Elytra subparallel, depressed, 1.7 
times longer than wide, prehumeral borders slightly oblique to midline, 
humeri prominent though somewhat rounded; inner 3 longitudinal striae 
well impressed, intervals subconvex, outer striae very irregular, 4th 
vestigial; no scutellar stria; apical groove deeply impressed, bisinuate, 
with crosier to 3rd stria or (1 of 4 specimens) running to 5th stria; discal 
