GUT 



463 



The muscle layer consists of a network of comparatively thick, circular and longitu- 

 dinal strands, which I call muscles because they correspond in position to the gut 



c- -OUTER LAYER 



MIDDLE MASS 



AMf, 1^^ ', 





^"■■'••■.i-'S---IN\ER 



'" \. EPITHELIUM 



^8^Sit^»^?^ 



MUSCLE LAYER 



ELIUM 





Fig. 8. Transverse section through gut wall and parenchyma, (x 666.) 



musculature of other Crustacea, but they exhibit no trace whatever of any form of 

 striation. In sections stained with Mallory each strand appears a brilliant red and per- 

 fectly homogeneous. Further, fixed preparations of true muscles always show the 



