62 AMERICAN SPIDERS AND THEIR SPINNINGWORK. 
directly upon various surfaces without tented enclosures, or like special pro- 
tection, would be most exposed to hymenopterous assault. In point of 
fact, these genera are numerously represented in the lists of parasitized 
spider eggs; but until more facts are in hand it is impossible to say 
whether the proportion is greater or less than, for example, with the Orb- 
weavers and Lineweavers, whose methods of protection are in this respect 
so different. 
Sixth, the personal carriage of the cocoon by Lycosids would seem to be an 
important factor in preserving the eggs. At least I have not. found a single 
reported case of parasitization in cocoons of species having this 
habit, which might be owing to poverty of observation rather 
than of existing facts. Some of the reported parasitized cocoons 
we know to be personally guarded by the mother, as in the case of Salti- 
grades, who usually stay within their silken cells with their eggs, and, for 
awhile after hatching, with the young also. Occasional excursions for 
food, however, might afford the required opportunity to the mother parasite. 
Cocoon 
Carriage. 
