984 ' Hentz's Descriptions of the 
SPINTHARUS FLAVIDUS. 
Plate X. Fig. 8. 
Description. Yellowish; abdomen orange yellow, edge 
white, disk with a yellow margin, and spots surrounded and 
crossed in two places by.a scarlet line, orange yellow, spot- 
less beneath ; feet, first and fourth pair with the antepenult 
joint tipped with orange, 275.» 3. 
Observations. "This spider was found hanging by a thread 
from a tree thirty or forty feet high. It had secured, while 
thus suspended in the air, a wasp, (Vespa) which, though 
many times larger than itself, was safely bound up for a 
repast. 
Habitat. Alabama. September — October. 
Genus Prorcus Walck. 
Characters. Cheliceres small, cylindrical; macille long, 
tapering to a point, inclined over the lip; lip widest near the 
base, short ; eyes eight, subequal, two in the middle in a trans- 
verse row, three on each side placed together in the form of a 
triangle ; feet excessively long, first pair longest, then the 
second, the third being the shortest. 
Habits. Araneides sedentary, making in dark corners 4 
very loose web of slender threads, crossed in all directions. 
Eggs collected together without a silk covering, which the 
mother carries with her cheliceres. 
Remarks. This subgenus, by the extreme length of its 
legs resembles Poanancrum. The species belonging to it may 
be found in apartments seldom visited, particularly churches 
or caves. They shake their body, when threatened by an 
enemy; but seem to have very weak means of offence, and 
to feed on the very smallest prey. 
PHOLCUS ATLANTICUS. 
late X. Fig. 7. 
Description. Pale or livid yellow ; abdomen with more or 
less distinct lines and spots; cheliceres articulated together 
