80 
Thomas C. Barr, Jr. 
Discussion. — This remarkable species is unusually slender and elon- 
gate, almost aphaenopsian in form. The frontal grooves are nearly obso- 
lete at the sides of the head, the pronotum is small and convex, and the 
elytra are convex with marked deplanation around the scutellum. At 6.2 
mm, two members of the type series are the largest cave carabids known 
from the Appalachian valley. The species was found under rocks and 
rotting wood on crumbly soil, walking across a wet, sloping rock surface, 
and under large flat stones near the bottom of the long talus slope extend- 
ing down from the entrance, where it coexists with P. deceptivus (engel- 
hardti group). In addition to the type locality cave (description in Holsin- 
ger 1975:133), P. longiceps is also known from Panther Creek Cave, 
Hancock County, Tennessee (description in Barr 1961:255), where J. R. 
Holsinger collected six specimens on 20 November 1979. Both caves are 
in Newman limestone high on Newmans Ridge, and both are damp with 
no permanent stream. 
Pseudanophthalmus thomasi, new species 
Figs. 45, 53 
Etymology . — Patronymic honoring Thomas C. Barr, III, who col- 
lected the only two males known of this rare and unusual species. 
Diagnosis. — Resembling P. longiceps in trilobed labrum margin, gen- 
eral form, and aedeagal structure, differing in less slender head, larger 
hind angles, and obsolescent elytral striae. 
Description. — Length 4. 7-5. 2 mm (N = 4). Form elongate, slender, 
subconvex, appendages elongate; color pale rufotestaceous, dull shining, 
microsculpture of elytral disc very fine, transverse, obsolescent. Head 1.3 
times longer than wide and nearly as wide as pronotum; labrum with 
distinct, broad, median lobe in anterior margin; last segment of maxillary 
palp 1.2 times longer than penultimate segment. Pronotum cordiform, 
convex, as long as wide, greatest width in apical third, width at apex a 
little more than base width and about 0.8 maximum width; sides deeply 
sinuate in basal sixth, then subparallel or slightly divergent to prominent, 
sharp, reflexed, slightly acute to right hind angles; base oblique or emar- 
ginate behind angles, secondary angles of base conspicuous but rather 
broadly rounded; anterior marginal setae at apical ninth, well forward of 
maximum width, posterior marginals placed well forward of hind angles; 
disc glabrous except for 4 long setae each side. Elytra subconvex, 
elongate-oval, 1.8 times longer than wide; prehumeral borders oblique to 
midline, humeri somewhat rounded, antapical sinuation very shallow; 
apical recurrent groove elongate, deep, bisinuate, running into apex of 
5th stria well in advance of anterior apical puncture; disc with rather 
