30 
Psyche 
[Vol. 94 
1977, J. Kethley, cone, pine litter (FMNH). One male specimen with 
weakly scierotized genitalia is identified as this species but is not a 
designated paratype: E of Tooms Lake, IV-14-1977, L. Hill, litter 
ex: dry sclerophyll forest Eucalyptus obliqua (FMNH). Found in 
southern Tasmania. 
Discussion: Close to septentrionalis and orientalis by the devel- 
opment of the left paramere and the broad penis apex. The broad 
symmetrical penis apex places thayeri closest to simplicis, but the 
form of the paramere and curved last flagellomeres easily separates 
these two species. 
Etymology: Named for M. K. Thayer, who has collected many 
species of Pselaphidae in Australia. 
Tasmanityrus septentrionalis n. sp. 
(Fig. 22) 
Length L86. Males with apex of last flagellomere curved ven- 
trally, acute, venter impressed in apical half, penultimate flagello- 
mere with antero-ventral angle at apex projecting; mesotrochanters 
with ventral spine near base, mesotibiae with long spatulate spur 
twice as long as first tarsomere; aedeagus with broad asymmetrical 
apex, left apical margin projecting, right paramere truncate at apex, 
acutely projecting laterally. 
Measurements of holotype: Flagellomere VII 0.10 wide, 0.11 
long, VIII 0.12 wide, 0.10 long, IX 0.13 wide, 0.23 long; mesotro- 
chanteral spur 0.03 long, mesotibial spur 0.09 long, first mesotar- 
somere 0.04 long. 
Specimen examined: Holotype male, Tasmania, 34 km W Smith- 
ton, Dismal Swamp, 11-26-1977, J. Kethley, mixed Nothofagus 
cunninghami & Acacia melanoxylon litter, base of Nothofagus cun- 
ninghami (ANIC). Found in northwestern Tasmania. 
Discussion: The broad asymmetrical penis apex places this spe- 
cies closest to orientalis, with the apex being slightly produced on 
the left rather than right side. The form of the paramere easily 
separate the two species, with the paramere of septentrionalis being 
stouter and much more abruptly angulate at the apex. 
Etymology: Named for its collection in extreme northwestern 
Tasmania. 
