66 
Psyche 
[March 
5. Three lamellae on tegulum; median apophysis small, not ex- 
panded distally (Fig. 10) Tinus peregrinus 
Five lamellae on tegulum; median apophysis large, expanded 
distally (Fig. 8) Tinus nigrinus 
6. Length of carapace less than 4.2 mm 7 
Length of carapace more than 4.2 mm 8 
7. Pair of conspicuous oval atria in epigynum (Fig. 30); carapace 
length more than 3.3 mm Tinus ursus 
No conspicuous oval bursal openings present in epigynum (Fig. 
24); carapace length less than 3.3 mm Tinus minutus 
8. Median elevation of epigynum absent (Fig. 20) 
Tinus peregrinus 
Median elevation of epigynum present 9 
9. Median elevation of epigynum about half width of epigynum; 
lateral elevations widely separated (Fig. 26) 
Tinus prusius 
Median elevation of epigynum distinctly less than half width of 
epigynum; lateral elevations not widely separated 
10 
10. Median elevation of epigynum widely separated from lateral 
elevations (Fig. 22) Tinus tibialis 
Median elevation of epigynum not widely separated from la- 
teral elevations 11 
11. Bursa copulatrix extends from its anterior origin into area of 
epigynum (Fig. 29) Tinus palictlus 
Bursa copulatrix extends from its anterior origin to about mid- 
way in epigynum (Fig. 19) Tinus nigrinus 
Tinus nigrinus F. Pickard-Cambridge 
Figures 1, 8, 9, 18, 19: Map 1 
Tinus nigrinus F. Pickard-Cambridge, 1901, Biol. Centrali-America, no. 2:304, 310, 
3 1 1 , pi. 30, figs. 8, 8a, 8b, 9. Male holotype and female paratype from Guatemala 
in British Museum (Natural History), examined. Simon, 1903, Hist. nat. Araig- 
nees, 2:1045. Roewer, 1954, Katalog der Araneae, 2(a): 142. Bonnet, 1959, 
Bibliographia Araneorum 2(5):4622. 
Diagnosis. The male palpus of this species shares only with T. 
peregrinus the narrowed tip of the conductor, but is distinguished 
from the latter by a distinctly larger median apophysis and a small, 
distinct tubercle on the prolateral medial margin of the cymbium. 
