Fio. 59.—Astcu:us flwviatiUs.—VentriH (A, B, C, F) and lateral (D, E) views of the 

 embryo in successive stages of develo]i)nent(after Ratlike, X 15). A is a little more 

 advanced than tlie embryo represented in tig. ."iS, F : D, E, and F are views of 

 the young craylish when nearly ready to be hatched : in E, tlie carajiace is 

 removed, and the limbs and abdomen are spread out. 1—14, the cephalic and 

 thoracic appendages ; ah, abdomen ; br, brauchiie ; c, carapace ; ep, epipodite 

 of the fir.st maxillipede ; gg, green gland ; h, heart ; Ih, labrum ; ir, liver ; in, 

 mandibular muscles. 



