NEWLY-HATCHED CRAYFISHES. 41 
That most careful naturalist, Roesel von Rosenhof, 
says of the young, when just hatched :— 
‘At this time they are quite transparent ; and when 
Fic. 8.— Astacus fluviatilis —A, two recently hatched crayfish attached 
to one of the swimmerets of the mother (x 4). pyr, 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 
