242 Proceedings of Indiana Academy of Science 
hatched.” I believe my observations and data show clearly that there 
is an incubation period of about twenty-one days with a brooding period 
of one to three days after hatching. The twenty-fourth day after the 
first moult the second oviposition takes place. Therefore, the young 
cannot be carried more than three days after they hatch for the female 
moults at that time. 
The sequence of events in mating and oviposition is briefly stated as 
follows: The male carries the female about with him from one to seven 
days, leaving her when she moults and returning to carry her until 
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FIGURE: 23 
Figure 2. The ordinate represents number of broods. The ab- 
scissa represents the number in a brood. This figure represents broods 
extruded between June 27 and August 14, 1920. Very few animals 
were breeding at the beginning of the observations recorded here. 
ee ee eS ee i we 
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