38 
Thomas C. Barr, Jr. 
transfer apparatus within the internal sac of the aedeagus consists of a 
canoe-shaped right dorsal sclerite partly enfolding an elongate-triangular, 
minutely spinulose, left ventral piece. The species of the engelhardti com- 
plex are widely distributed in the Appalachian valley from Giles County, 
Virginia, southwestward through eastern Tennessee, southeastern Ken- 
tucky (Pine Mountain), and northwest Georgia, to DeKalb and Blount 
counties, Alabama, then following the Tennessee River valley westward 
across north Alabama, finally northward again to Decatur, Perry, and 
Wayne counties in west-central Tennessee. (Seven trans-Allegheny spe- 
cies belonging to the engelhardti group will be treated in a subsequent 
paper.) 
No classification of the genus into species groups and no attempt to 
understand the internal phylogeny of Pseudanophthalmus is possible 
without a reasonably clear picture of this large block of related species. 
The classical conflict between the dual goals of taxonomy — organiza- 
tion and retrieval of information versus expression of phylogenetic rela- 
tionships — arises in any attempt to regroup the engelhardti complex. In 
this paper I propose seven species groups, three of them previously sug- 
gested by Valentine ( 1 932) or Jeannel ( 1 949), and four new groups. There 
are eleven subsets of related species; four of these are placed in the 
engelhardti group as defined here (species clustered around P. engel- 
hardti, P. holsingeri, P.fulleri, and P. loedingi, respectively) and two in 
the hubrichti group (species clustered around P. hubrichti and P. 
egberti). However, I regard all seven groups as internally monophyletic. 
A brief list of the five species groups of the northern Appalachian valley 
(not in the engelhardti complex) is given at the end of this paper. Four- 
teen other groups have been proposed for the numerous species west of 
the Allegheny Plateau (see Jeannel 1949: Valentine 1932; Krekeler 1973). 
Most of the caves cited in this paper have been described by Douglas 
(1964) or Holsinger (1975) for Virginia, Barr (1961) or Matthews (1972) 
for Tennessee, and Varnedoe (1973) for Alabama. 
This paper is dedicated to the memory of my late friend and colleague. 
Dr. Walter B. Jones, for many years State Geologist of Alabama and 
founder and Director of the Alabama Museum of Natural History. In the 
1940s and 1950s he explored many caves in Alabama, Kentucky, and 
Tennessee with Dr. J. Manson Valentine, discovering many new taxa of 
cave trechines. He would have delighted in the descriptions of the new 
species in the present paper, especially those, I think, from Alabama. I 
am particularly pleased that one of the most interesting of the new species 
groups {jonesi group) bears his name. His zest for life, his generosity, and 
his assistance to those of us who shared his never-ending curiosity about 
the subterranean world earned him a major role in the development of 
North American biospeleology. 
