258 ARANEIDEA. 
METAPHIDIPPUS, gen. nov. 
Type M. mandibulatus, sp.n., ¢. Costa Rica. 
This genus includes those spiders referred by Peckham to Dendryphantes. It is 
very difficult to remove them structurally from Paraphidippus, and if they happened to 
be of the same size there would be still less inclination to do so. They are all smaller 
spiders, with either yellow bodies variegated with spots and slashes, or more or less 
clothed with metallic scales, copper, green, or pink. The only tangible difference one 
can find is that the first one or two pairs of legs are not clothed with hairs in either 
sex. The protarsi of the posterior legs are in most cases entirely devoid of spines, 
except at the apex. 
Males. 
(Legs not fringed with hair beneath, but, as usual, clothed with scattered 
hairs throughout.) 
I. Mandibles very elongate, more or less attenuate; basal segment often as 
long or longer than the carapace; the three mandibular teeth widely 
separate, the lower and larger one situated close to, about once or twice its 
length from, the base of the fang, the other two, usually more or less 
adjacent, situated close to the basal inner angle of the segment, where 
they meet the curved point of the elongate, usually more or less sinuous, 
fang. 
A. Bulb of palpus with a straight or circularly curved spine at the apex, 
not situated on the side. 
1. Fang of mandible very long, and widely sinuous, having a long spur 
near its base on the outer side, whose apex is slightly recurved . 
2. Fang of mandible simple, without spur at the base on the outer side. 
a’. The apical tooth of the mandible widely separate from the two 
smaller basal teeth. 
a’. The apical tooth not larger than either of the basal teeth . . nitidus, Peckh. 
6°. The apical tooth much larger than either of the basal teeth. 
a’. The basal teeth widely separate, three times the length of the 
middle one apart, which is much the largest of the two . 
6°. The basal teeth adjacent, not more than the length of one of 
them apart. 
a’. Upper apical angle of basal segment of mandible with a 
stout cusp or tooth. 
a’. Apical spine of palpal bulb straight, conical, sharp. 
Upper apical tooth of mandible sharp . . . 
6°, Apical spine of palpal bulb circularly curved, starting 
from the outer side, curving downward and upward, 
its apex directed outward. Upper apical tooth of 
mandible truncate 
mandibulatus, sp. n. 
tridentatus, sp. n. 
octonotatus, sp. n. 
pernix, sp. 1. 
