PETLLOOARIDA 





Fio. 116.— Partly diagrammatic section through thn thorax of Nebalia. en, thi 

 axial-jointed endopodite; ex, exital portion or gill l 



and flabellum below with transverse rows of Juts, c, carapace; at, b 

 int. intestine; ny, nen vm. 



Fio. 117.— Zoga of the common >ab (Cancer frror Much enlarged. 



