130 Thomas C. Barr, Jr. 



ginal punctures; hind angles right to slightly obtuse, sharp. Elytral disc 

 moderately convex, 3 inner striae very feebly impressed, only sutural 

 complete, intervals completely flat (disc flattened near middle, and 

 striae deep with convex intervals in uncifer). Aedeagus of holotype 0.42 

 mm long, very strongly arcuate, apex more briefly attenuate and less 

 sharply hooked, in comparison with uncifer, internal sac with heavy 

 scales obscuring copulatory pieces; parameres rather short, with 4 stout 

 apical setae. 



Type series. — Holotype male (American Museum of Natural His- 

 tory) and one female paratype, Camp Creek Bald, just below summit, 

 elevation 1460 m, Greene Co., Tennessee/ Madison Co., North Carolina 

 (Greystone 7%' Quadrangle), 9 August 1983, T. C. Barr, Jr., T. C. Barr, 

 III. Measurements of holotype (mm): total length 3.46, head 0.64 long 

 X 0.70 wide, pronotum 0.67 long X 1.01 wide, elytra 2.08 long X 1.47 

 wide, antenna 1.71 long, aedeagus 0.42 long. 



Distribution. — Known only from the type locality, where it coexists 

 with T. caliginis, T. hydropicus beutenmuelleri Jeannel, and a small iso- 

 late near T. (M.) vandykei Jeannel. Compared to the last two species it 

 is distinctly larger; compared to caliginis it is less convex, has smaller 

 eyes, very shallow elytral striation, and — if males are available — an api- 

 cally hooked aedeagus and a single enlarged protarsomere. 



DISCUSSION 



All of the Pseudanophthalmus taxa described in this paper occur in 

 south-central Kentucky, east or south of the Mammoth Cave region. 

 Nine belong to the menetriesi group, which is defined by the forward 

 position of the anterior discal puncture of the elytron opposite the 2nd 

 umbilicate puncture, a vestigial apical elytral groove, and the structure 

 of the transfer apparatus. The copulatory pieces resemble those of the 

 pubescens group but are simpler and lack spines or apical knobs (Barr 

 1979b). The pronotum hind angles are tilted forward in menetriesi and 

 its close allies {simulans, pilosus, globiceps, trans/luvialis; weakest in 

 glo biceps) and also in cerberus. The hind angles are produced backward 

 in darlingtoni and striatus. Both cerberus and darlingtoni have pruinose 

 elytral microsculpture, which is absent in other species of the menetriesi 

 group (although present to a greater or lesser extent in all species of the 

 pubescens group). Pseudanophthalmus pubescens intrepidus, which 

 occurs on the southern periphery of the range of polytypic pubescens, 

 manages to cross the upper Barren River in the vicinity of Barren River 

 Dam, where Neaphaenops tellkampfi crosses (Barr 1979b). The Barren 

 is a barrier at Bowling Green, but not in part of its upstream course 

 (Barr, in press). 



The two larger Trechus species described from Camp Creek Bald 



