1966] 
Barr — Cave Carabidae 
285 
3(2) Size small, about 3.5 mm; humeral margins entire; anterior 
discal puncture ± at level of 4th puncture in humeral mar- 
gin; cf cf with posterior margin of last sternite notched, 
aedeagus extremely elongate and slender; rare 
P. inexpectatus Barr 
Size larger, about 4.5-5. 5 mm; humeral margins serrulate; an- 
terior discal puncture zb at level of 2nd puncture in humeral 
margin; cf cf with posterior margin of last sternite entire, 
aedeagus not extremely elongate and slender 4 
4(3) Elytral disc densely and finely pubescent, longitudinal striae 
very regular and impunctate; sutural stria continued around 
apical margin of elytron and connected to 3rd longitudinal 
stria; aedeagus broadly truncate at apex 
P. pubes cens Horn 
Elytral disc glabrous or sparsely pubescent, striae evidently 
punctate; sutural stria continued only a short distance 
around apical margin of elytron, not clearly connected to 
apex of 3rd longitudinal stria; apex of aedeagus attenuate 
5 
5(4) Elytral disc glabrous, longitudinal striae very shallow and 
coarsely and regularly punctate; base of pronotum turned 
obliquely forward behind the hind angles 
P. menetriesii Motschulsky 
Elytral disc sparsely pubescent, longitudinal striae deep and 
irregular, finely and distinctly punctate; hind angles project- 
ing backward behind base of pronotum 
P. striatus Motschulsky 
In synonymizing P. striatus with P. menetriesii (Barr, 1962: p. 
280) I was in error. The male genitalia of the two species are vir- 
tually identical, and cannot be used to separate them. The characters 
cited in the key are the most highly diagnostic, although P. striatus 
is a bit more slender and less depressed, the humeri are much less 
prominent, and there is usually a slight sinuosity of the elytral mar- 
gin behind the humeral punctures. 
The presence of several species of Pseudanophthalmus in Mam- 
moth Cave raises the possibility of misinterpretation of the three 
trivial names proposed by Motschulsky (1862). Professor M. S. 
Ghilarov, President of the National Committee of Biologists of the 
Soviet Union, kindly arranged, at my request, to have specimens of 
the Mammoth Cave beetles compared with Motschulsky’s types in 
the Zoological Museum of Moscow. Dr. K. V. Arnoldi, of the 
