224 
Psyche 
[September 
long; nearly 1.39 mm wide opposite posterior border of second coxae 
where it is widest; considerably narrowed opposite palps; nearly 
0.95 mm tall shortly behind PME where it is tallest; surface quite 
granulose; median thoracic groove as usual. Eyes: in general as in 
male. Ratio of eyes AME : ALE : PME : PLE = nearly 10 : 
12.5 : 11 : 10. AME separated from one another by nearly three- 
fifths of their diameter and separated from ALE by nearly seven-tenths 
of their diameter. PME separated from one another by nearly 1.2 
times their diameter and separated from PLE by slightly less than 
twice their diameter. Lateral eyes separated from one another by 
nearly 1.7 times the diameter of ALE. Central ocular quadrangle 
wider behind than in front in ratio of nearly 7:5; wider behind 
than long in ratio of nearly 5 : 4. Height of clypeus equal to 1.1 
times the diameter of AME. Chelicerae: somewhat less con- 
spicuously developed than in the male holotype but essentially as in 
that sex; teeth along fang groove as in the holotype. Maxillae: 
essentially typical of females of the genus and nearly as in male except 
that the distal lateral corner is regularly rounded without an exten- 
sion as in the male. Sternum: essentially as in the holotype; with 
fourth coxae separated from one another by nearly four-fifths of their 
width. Legs: 4123 in order of length; no true spines observed but 
there are numerous long, slender and somewhat conspicuous spiniform 
bristles; trichobothria have been observed but their number and 
placement have not been determined; no ventral cusps have been 
observed. The palpal tarsus bears a small terminal claw and there 
is a fairly well developed brush of hairs on the dorsal surface of 
this segment. Abdomen : essentially typical of females of the smaller 
species in this genus; there is no dorsal scutum but the epigastric 
scutum is well outlined. The epigynum is obscurely distinctive; the 
small openings appear to be near the anterior border; the canaliculi 
are very narrow and intricately inter-coiled and very difficult to trace 
accurately (Fig. 19) ; the degree of coiling among the canaliculi 
varies considerably among the available paratypes. 
Diagnosis. This is another species which seems to be closely related 
to T. bicolor. The features of the eyes, the sternum, maxillae, male 
palp and female epigynum all quite definitely establish it as a new 
species. 
Records. Several dozens of males and females were taken between 
April 1 and April 7, 1964 in Trinidad, W. I., St. Augustine on 
the campus of the University of the West Indies where the species 
appeared to be abundant. 
