Symphytognathid Spiders — Marples 
49 
carapace, but below it is a more or less verti- 
cal clypeus. The details are very difficult to 
make out, owing to the small size. 
Eyes: Six, all pale. Posterior row slightly 
recurved. The PME are separated from one 
another by about half their diameter and from 
the PLE by almost their diameter. The lateral 
eyes are touching. Ratio of eyes, PLE: PME: 
ALE = 75:70:51. Breadth of eye group 0.23 
mm. The PME are separated from the an- 
terior ridge by about half their diameter and 
from the anterior edge of the carapace by 
about two and a half times their diameter. 
Cheltcerae: Small. 
Maxillae and Lip: As in female. 
Sternum: length 0.24 mm., breadth 0.19 mm. 
Palp: Large and rounded palpal organ, de- 
tails as in figure. 
, 12 4 3 
Le^s: 
3.8 3.3 2.7 2.4 
Patu samoensis n. sp. 
Eight 9 from minute sheet webs in the ir- 
regularities of tree trunks in forest, Apia, 
Upolu, Western Samoa. 
female: Length 1.63 mm. Carapace, ster- 
num, and mouth parts dark brown. Legs 
lighter with dark annulations. Abdomen 
mottled greyish. 
Carapace: Length 0.55 mm., breadth 0.43 
mm. High and rounded. 
Eyes: Six, all pale. Large and conspicuous, 
posterior row straight. PME separated from 
one another by less than a quarter of their 
diameter and from the PLE by less than half 
their diameter. Lateral eyes touching. Ratio of 
eyes, PME: PLE: ALE = 78: 68: 64! Eye groups 
breadth 0.30 mm. PME twice their diameter 
from the carapace edge. 
Chelicerae: Apparently fused for about half 
their length and rather cylindrical in anterior 
view. The fang is longer than the groove and 
I 
II 
III 
IV 
Tibial Index 1 11.3 
PATELLA 
FEMUR 
AND TIBIA 
METATARSUS 
TARSUS 
TOTAL 
0.31 
0.36 
0.16 
0.23 
1.06 
0.26 
0.33 
0.14 
0.19 
0.92 
0.20 
0.23 
0.10 
0.15 
0.68 
0.27 
0.30 
0.11 
0.16 
0.84 
Tibial Index IV 12.5 
One stout spine on the ventral surface of 
tibia II about one third of its length from the 
distal end. 
Abdomen: Length 0.55 mm., breadth 0.33 
mm. Pear-shaped with the narrower posterior 
end truncated. Spinnerets ventral and close to 
the petiolus. 
Web and Coccoons: The webs were situated 
on tree trunks and consisted of fine horizontal 
sheets about 4 centimeters long. The silk was 
too fine for the arrangement of threads to be 
made out. No oblique thread was noticed as 
in the Samoan species, though a bunch of 
coccoons was hanging some way from the 
edge. Spiders were seen sitting in the centre 
instead of with the coccoons; possibly these 
may have been males while the females were 
with the coccoons. 
has relatively large serrations. On the ventral 
retromargin of the groove is a stout process 
bifurcated into two sharp teeth. The cheli- 
cerae do not bulge forward in front of the 
edge of the carapace when seen in dorsal view. 
Maxillae: Converging but not meeting 
above the lip. 
Lip: Broader than long. Junction with ster- 
num distinct. 
Sternum: Length 0.30 mm., breadth 0.29 
mm. Convex. 
Palp: No trace of a palp is to be seen even 
in a cleared specimen, though three or four 
hairs arise from the same spot. No palp was 
visible in the cleared skin of a first instar taken 
from a coccoon. 
^ 12 4 3 
2.6 2.4 2.4 1.9 
