106 
Psyche 
[June-September 
(from 4 to 10), and the ventral furrow is nearer the epi- 
gastric plate than to the spinerets. This character of teeth 
is found variable, as in A. laticeps sp. n. there are no teeth 
on the superior margin of the male and a distinct carina on 
the inferior margin; and in the female, a carina on the 
superior margin and no teeth on the inferior margin, yet 
the male palpus is nearer the type of the genus than any 
other American species. 
With the material available, the genus Gayenna is re- 
stricted to species from South America, with the ventral 
furrow near the spinnerets (at least one-third nearer than 
to the epigastric plate) , and the genus Anyphaena, to species 
with the ventral furrow near the middle (midway between 
the epigastric plate and the spinnerets) and usually two 
pairs of spines beneath the anterior metatarsi. Future 
study may prove that the American species of Anyphaena 
may belong to some of the numerous neotropical genera, 
rather than to the European genus Anyphaena. 
It has not been possible to make a satisfactory key for 
the females of the genus. Possibly when both sexes of all 
species are known, some character can be recognized by 
which they can be separated, but at present they can be 
identified only by the vulva. In both sexes the number 
and position of spines on the anterior legs is the same. 
Anyphaena 
Males 
1. I metatarsus 1-1 spines, head broad, mandibles genicu- 
late, large club-shaped spur on patella of palpus 
calcar sp. n. 
I metatarsus 2-2 spines 2. 
2. Head but little narrowed in front of I coxae, mandi- 
bles porrect, cephalothorax shining chestnut brown 
laticeps sp. n. 
Head less than half as wide as cephalothorax between 
II and III legs, cephalothorax never brown 3. 
