Pacific Island Spiders, V — Marples 
409 
into two equal cusps. Palps long and slender 
with a small tibial apophysis and short embolus, 
as in Figure 10. Very long thin white hairs along 
the prolateral side of the tibia and to a lesser 
extent on the patella. 
THERIDIIDAE 
Tberidion adorns oni Berland 
MALE ALLOTYPE: Tapatapao, Upolu, Samoa. 
Collected by E. C. Zimmerman, 19/7/40. Fe- 
male described from Tahiti. Length 2.71 mm. 
Carapace, sternum, legs, and mouthparts light 
brown. Legs with faint annulations, strongest 
on IV, scarcely perceptible on I. Abdomen pale 
greyish brown, the upper surface with stout 
bristles each arising from a conspicuous dark 
base. Posterior half of dorsal surface with pairs 
of irregular dark marks extending back as far 
as the spinnerets. Single pair of dark marks near 
the anterior end. 
Carapace: Length 1.31 mm, breadth 1.09 mm. 
Groove longitudinal. Upper surface sloping up 
steeply to the ocular area. 
Eyes: Eight. AM dark. From in front the an- 
terior row straight, from above the posterior 
row straight. Ratios of the diameters of the 
eyes and of their distances apart: AM, 200; AL, 
131; PM, 142; PL, 129; AM-AM, 128; AM- 
AL, 87; AM-PM, 145; PM-PM, 151; PM-PL, 
130; L-L, 18; clypeus, 264. Breadth of eye- 
group 0.62 mm. 
Chelicerae: Long and tapering, groove un- 
armed and very oblique. 
FIG. 10. Unidentified salticid. Ventral and retro- 
lateral views of the male palp. 
FIG. 11. Tberidion adamsoni. Retrolateral view of 
the male palp. 
Maxillae: About twice the length of the lip 
and meeting in front of it. 
Lip: As wide as long, slightly concave distally. 
Sternum: Length 0.67 mm, breadth 0.74 mm. 
Heart-shaped, rebordered, slightly indented op- 
posite the legs. 
Palp : As in Figure 11. 
Legs: I II IV III Palp 
6.77 5.16 3.45 3.30 0.97 
Patella 
and 
Femur 
Libia 
Metatarsus 
Tarsus 
Total 
Palp 
0.58 
0.37 
0.32 
1.27 
I 
2.65 
3.31 
2.32 
0.56 
8.84 
II 
2.07 
2.45 
1.76 
0.48 
6.76 
III 
1.44 
1.08 
1.31 
0.49 
4.32 
IV 
1.36 
1.41 
1.43 
0.46 
4.66 
Tibial Index I 
21.8 
Tibial Index IV 
10.7 
Abdomen: Length 1.48 mm, breadth 1.06 
mm. Spinnerets in conspicuous group, anterior 
about twice the size of the posterior, median 
minute. 
EPEIRIDAE 
Epeira pogisa Marples 
A single female collected by E. C. Zimmer- 
man, Afona Trail, Tutuila, Samoa, at 200' on 
1/8/40, is doubtfully assigned to this species. 
The epigynum and cheliceral teeth are similar. 
The present specimen has a length of 9-5 mm 
compared with 5.28 mm for the type, and the 
abdomen, instead of being dark, is pale with 
a dark trident marking anteriorly, the central 
branch over the heart, the lateral ones continued 
