44 
Thomas C. Barr, Jr. 
North Carolina northward to the Bald Mountains along the Tennessee- 
North Carolina border. The northernmost limit appears to be Roan 
Mountain, Carter County, Tennessee — Mitchell County, North 
Carolina. The aedeagus is the smallest among the four subspecies of 77 
hydropicus (0.84-0.90 mm long), its apex slender, attenuate, slightly inflec- 
ted but not knobbed. The pronotum is only 0.6 as long as wide, the elytral 
disc is convex, and the elytral striae are feebly impressed; the elytral 
apexes are more tapered than in other subspecies of 77 hydropicus. 
Trechus (Trechus) hydropicus cams Barr, new combination 
Fig. 21 
Trechus beutenmulleri cams Barr 1962:73. Type locality, Whitetop Moun- 
tain, Grayson County, Virginia (USNM). 
Originally described from Whitetop Mountain in extreme southwest 
Virginia, T. h. cams has more recently been collected in Bowling Cave, 
0.75 mile (1.2 km) southeast of Ben Hur, Lee County, Virginia, elevation 
1700 feet (500 m) (J. R. Holsinger); from the summit of Big Black Moun- 
tain, Harlan County, Kentucky, elevation 4000 feet (1200 m) (T. C. Barr 
and S. B. Peck); and from the north slope of Pine Mountain, Kingdom 
Come State Park, Letcher County, Kentucky, elevation 2000 feet (600 m) 
(T. C. Barr). The range of the subspecies thus extends across the Ap- 
palachian valley floor from the Unakas to the Allegheny front; it probably 
intergrades with T. h. hydropicus farther north, but intermediate popula- 
tions have not yet been discovered. 
The aedeagus of T. h. cams is long (0.96-1.02 mm), the apex 
prominently inflected in left lateral view but not noticeably knobbed at 
the tip. Externally T. h. cams is virtually indistinguishable from T. h. 
hydropicus , with the pronotum fully two-thirds as long as wide, and the in- 
ner elytral striae rather deeply impressed. 
Trechus (Trechus) schwarzi schwarzi Jeannel, new status 
Figs. 3, 23 
Trechus Schwarzi Jeannel 1931:437. Type locality, “Roan High Knob”, 
but corrected to Retreat, Haywood County, North Carolina; type 
deposited in USNM. Barr 1962:74 (in part). 
As previously noted (Barr 1962: 75), the type locality of T. schwarzi is 
Retreat, near the present site of Sunburst and Lake Logan, in the Great 
Balsam Mountains, Haywood County, North Carolina. Additional 
material which I recently collected at Mt. Pisgah, Haywood-Buncombe 
counties, and Buck Spring, Transylvania County, enabled me to make a 
