1951] 
Chickering — Dictynidae 
155 
Spines . — True spines are lacking but spiniform hairs 
are numerous. Claws appear to be the same as described 
in T. pusillus Chickering (’50). 
Palp. — Short, highly modified in all four segments from 
femur to tarsus, inclusive. Femur deepened so that it is 
only longer than deep in ratio of 34 : 25 ; somewhat flat- 
tened laterally but very robust; its distal ventral rim is 
strongly chitinized. The patella is very robust and is 
drawn out distally to form a large strong chitinized ramus 
ending in a strong tooth; near its base there is a short 
robust retrolateral pointed tubercle. The tibia is also 
strongly modified; it is curved to meet the patellar ramus 
and together with this segment forms a kind of forceps; 
the tibial ramus terminates in three points between which 
the tip of the patellar ramus terminates; this segment 
also has a robust, strongly chitinized, retrolateral pointed 
tubercle near its base. The meeting place of the patella 
and tibia leaves a relatively large rounded aperture be- 
tween them thus suggesting an important specific use. 
The most characteristic tarsal feature appears to be the 
conspicuous basal apophysis of special shape (Figs. 2-4). 
Abdomen. — Broad at base, widest about two fifths from 
base, narrows to a point at anal tubercle, overlaps cara- 
pace somewhat; with a series of three transverse dorsal 
grooves in posterior fifth; with four quite clear dorsal 
sigilla in second fourth, the first pair especially distinct; 
cribellum of normal size, clearly undivided, with numerous 
stiff bristles along its anterior surface; six spinnerets 
as usual in the genus. 
Color in alcohol. — Carapace light reddish brown with 
dark streaks. Sternum and mouth parts various shades 
of amber. Legs: nearly uniformly dark brown, lighter be- 
low. Abdomen : generally dark brown, nearly black above, 
lighter below; on the dorsum just anterior to middle there 
is a small irregular light spot which is more conspicuous 
on some of the paratypes. 
Female allotype. — Total length 1.716 mm. Carapace 
.660 mm. long; .638 mm. wide; .264 mm. tall and, therefore, 
