406 
PACIFIC SCIENCE, Vol. XVIII, October 1964 
Legs: I IV III II Palp 
2.31 1.69 1.38 1.32 0.71 
Patella 
and 
Femur 
Tibia 
Metatarsus 
Tarsus 
Total 
Palp 
0.64 
0.32 
0.46 
1.42 
I 
1.36 
2.16 
0.71 
0.38 
4.61 
II 
0.91 
1.02 
0.45 
0.27 
2.65 
III 
0.89 
0.98 
0.53 
0.35 
2.75 
IV 
1.09 
1.32 
0.59 
0.38 
3.38 
Tibial Index I 
: 5.9 
Tibial 
Index IV 
6.6 
Leg I very large and stout, tarsi and metatarsi 
being much narrower. All joints except the 
Fig. 6. Mollicia pusilla. Ventral and retrolateral 
views of the male palp. 
tarsi with a small number of long outstanding 
hairs. Metatarsus I with a short stout prolateral- 
ventral spine at the distal end, and a small Mollicia pusilla Strand 
retrolateral-ventral one also. There is also a 
small prolateral-ventral spine about the middle 
of metatarsus I. Tibia I with a short stout 
prolateral-ventral spine a short distance from 
the distal end. There is a smaller ventral spine 
close to it and a minute one about one-third of 
the length of the tibia from the proximal end. 
No other spines on leg I, and those on the other 
legs slender, not very numerous and of the usual 
type. No scopulae. 
Abdomen: Length 2.69 mm, breadth 1.42 
mm. Truncated in front, narrow behind. This 
specimen is doubtfully placed in the genus 
Flacilla. 
Fig. 5. Flacilla kraussi. Ventral and retrolateral 
views of the male palp. 
A specimen collected at Amouli, Tutuila, 
Samoa, by E. C. Zimmerman viii-2-40 is at- 
tributed to this species described from Tahiti. 
MALE: Length 3.85 mm. Chestnut, paler in 
the ocular area with an oval pale mark behind. 
Black around the eyes. Remainder pale brown, 
the abdomen with two poorly defined dorso- 
lateral darker bands. 
Carapace: Length 1.94 mm, breadth 1.46 mm. 
Slightly convex in the ocular area, sloping 
steeply down behind. General impression high 
and short. 
Eyes: Ratios of the diameters of the eyes and 
of their distances apart: AM, 228; AL, 143; 
PM, 27; PL, 113; AM-AM, 18; AM-AL, 25; 
AL-PM, 165; PM-PL, 103; PL-PL, 535; cly- 
peus, 45. Ratios of the dimensions of the ocular 
quadrangle, including the eyes: AL-AL, 734; 
AL-PL, 482; PL-PL, 685. From above anterior 
row of eyes recurved. Breadth of eye-group 
1.45 mm. 
Chelicerae : Short and slightly swollen, fang 
short. Two teeth on the promargin of the 
groove and one larger one on the retromargin. 
Maxillae: Broad and semicircular distally. 
Lip: Lozenge-shaped, about half the length 
of the maxillae. 
Sternum: Length 0.87 mm, breadth 0.69 mm. 
Convex. 
Palp: As in Figure 6. 
