254 Alexander Petriiiikcv'itch, 



jects beyond the copulatory apparatus. The structure of the 

 latter is not clearly discernible, yet it seems to have a more or less 

 spiral arrangement as indicated by dark streaks represented as 

 lines in the drawing. 



Figure 23. — Linyphia pachygnatlwidcs n. sp. Specimen No. 38124. Right 

 pedipalp. x 70. 



Total length of spider — about 4 mm. Abdomen — 2.5 mm. long, 

 1.3 mm. wide. The legs are slender, in order 1243. They are 

 covered with short brown hair. Here and there a few weak, 

 short spines are visible, forming various angles with the axis of 

 the leg (from 24 to 58 degrees). The separate joints are clearly 

 visible only in the first- pair of legs. Here the femur measures 



3.7 mm., patella with tibia — 4.5 mm., metatarsus with tarsus — 



6.8 mm., total 15.0 mm. In the second leg only the metatarsus is 

 clearly separated from the tibia and together with the tarsus 

 measures 5.0 mm., while the total length of this leg is 12 mm. 

 The third pair of legs is poorly preserved and cannot be even cor- 

 rectly measured. As far as visible it measures about 5 mm. The 

 fourth pair of legs is complete although separation of the joints 

 is not clear. Its total length is 9 mm. 



FAMILY ARGIOPID.E. 



Characters of the Family : — Eight eyes in two rows, all diurnal. 

 Spinnerets approximated, preceded by a colulus. Chelicerae 

 with oblique margins with several teeth. Legs with spines. 

 Tarsi with three claws and with several s])urious claws (ser- 

 rated bristles). 



The family is usually divided into three sub-families which may 

 be distinguished as follows : 



I 



