130 Journal of Entomology ‘and Zoology 
of large vines. Theridiide were found in meter boxes and barns; 
the Attide were collected in Imperial Valley under rocks; the 
Lycoside which were collected during the month of April, were 
found in the grass with the females carrying the egg cases. The 
young of Thomiside were found, no eggs having been collected. 
The shape of the egg cases of the several species studied dif- 
fered materially. Those of Peucetia viridans are, as Comstock 
describes it, “hemispherical in outline with small projecting tufts.” 
The egg sac of Aranea gemma is a light brown “loose flocculent 
mass of silk enclosing the ball of eggs.” The egg case of most of 
the Thomiside, Comstock describes as being “lenticular in form” 
and are usually formed of two equal valves united at the border, 
which presents a little circular fringe. The egg case of Philodro- 
mus is made up of two disks which are fastened closely to the bark 
of the trees and may be more than lenticular in shape. In the sub- 
family Misumenine the egg sac is sometimes free and sometimes 
suspended like a hammock in a retreat formed of leaves rolled or 
drawn together. In most cases after the egg sac is made, the fe- 
male stops her wandering habits in order to watch it. The egg sac 
of Latrodectus mactans is made up of a round closely woven silk 
ball, hard on the exterior and soft on the interior. Dust soon col- 
lects on the egg sac which gives it a dirty white color. They are 
suspended from the web by a few loose threads. The Lycoside 
tie their children to their apron strings. The females were found 
in great abundance in the early spring holding the flat circular egg 
case firmly with their mandibles. These cases were held up off 
the ground when the female moved and were dropped if she was 
disturbed. In the confined specimens the female upon being dis- 
turbed would drop her bundle, but as soon as the disturbance was 
over she would pick up the case again. The Attide were all col- 
lected from a valley with a warm climate and seemed to resent the 
change when they were placed in the cooler atmosphere of the 
laboratory. Their egg cases were of a very fine soft white silk and 
were attached to the under side of a rock, using the rock as one 
side and building the nest around that side. One female laid her 
eggs in captivity. The case was the same as those on the rocks 
but one side of the glass was used as a foundation. As there were 
