IJSSECT TROGLODYTES. 



141 



\ l-^o' 



FIG. 48.— SEASIDE RESIDENCE OF TURRET SPIDER. 



peat among their own broodi^ the maternal instincts 

 that fostered tlieir baby days." 



"• There is an interesting variation in Arenicola's 

 mode of building her turret which I have often ob- 

 served along the jSTew Jersey seaboard. Around the 

 edge of the burrow, which is always driven straight 

 downward by tlie spider, is heaped a foundation of 

 tiny pebbles. These are usually white quartz, gathered 

 from the surrounding sand. Upon this foundation the 



