818 



THE NATIONAL GEOGRAPHIC MAGAZINE 



IN IIICR SNUG "HIBERNATION CHAMBER, PSAMMY SLEEPS OUT THE WINTER 



Like a man in a diving suit with Iiis liead in a lielmct, tlic woven cocoon projects up into tlie 

 sealed and waterproof "attic room." On the roof rests the ornamental cupola. After she has finished 

 "licking in" a smooth, polished lining to her retreat (right, side of cocoon cut awaj')i Psammy be- 

 comes quiet and changes hardly at all in appearance for several months. 



WHEN SPRING COMES, NATURE S HOCUS-POCUS BRINGS STARTLING DEVELOPMENTS 



Some time in Ma>', the prepupal larval stage is reached (left) and the mummylike figure shows 

 roughly the adult divisions of head, thorax, and abdomen. When the larval skin splits and shucks 

 off, the ghosth- pupa slowh- unfolds. During the next day or two the features grow more distinct 

 like a picture gradually brought to focus. (Magnil'ied about four times.) 



