NEWLY-HATCHED CRAYFISHES. 41 



That most careful naturalist, Boesel von Rosenhof, 

 says of the young, when just hatched : 



" At this time they are quite transparent ; and when 



FIG. 8. Astaciu fluviatttig. A, two recently hatched crayfish attached 

 . to one of the swiminerets of the mother ( x 4). pr, protopodite ; 

 en, endopodite : and ex, exopodite of the swimmeret ; ec, ruptured 

 egg-cases. B, chela of a recently hatched crayfish ( x 10). 



such a crayfish [a female with young] is brought to 

 table, it looks quite disgusting to those who do not know 



