288 
Psyche 
[September-December 
GROUP II: Egg sacs with maternal care. 
On 17 October 1974 seven females constructed egg sacs and on 
19 October 1974 three more females constructed egg sacs. The 
Group II egg sacs were allowed to remain with the females until 
the emergence of young. 
GROUP III: Egg sacs with “adopted” maternal care. 
A 3rd group of 10 egg sacs was collected on 28 October 1974. 
These egg sacs were taken from the females who had made them. 
Each egg sac was then placed in a rearing container that housed 
one of the females that had been removed from the Group I egg 
sacs. The Group III egg sacs were now with females whose own 
young were due to emerge in approximately 12 days but the young 
of the Group III egg sacs were not due to emerge for approxi- 
mately 24 days. Thus these females had adopted egg sacs that were 
12 days behind the schedule of the female’s own egg sacs. 
Results and Discussion 
The average duration of incubation and 1st stadia spent in the 
egg sac for the groups studied was: Group I — 25.25 days; Group 
II — 23.6 days and Group III — 22.6 days with ranges of 21-28, 
22-29 and 20-26 days respectively; all falling within the time range 
as reported by Whitcomb, et al. (1966). Only two of the 30 egg 
sacs were found to contain dead 2nd instar spiderlings. I believe 
in handling those two egg sacs it was very possible that excess silk 
normally holding the egg sac in foliage held the lid to the bowl of 
the egg sac in such a way as to make emergence of young impos- 
sible. 
The female Green Lynx Spider aids in emergence of young by 
tearing the egg sac shortly after the 1st deutova (1st instar — with- 
out tarsal claws, mouthparts or functional eyes) have molted. She 
inserts her chelicerae between the bowl and the lid and pulls the 
bowl away from the lid (Whitcomb, et al., 1966). The females of 
groups II and III displayed the maternal care described above, and 
performed one previously unreported behavior — the adult females 
tilted the egg sacs at an angle from 40° -80° after opening the egg 
sac and prior to the 1st emergence of young. The egg sacs were 
tilted with the recently-made opening on the lowest side. The 
