1001.] 



ANATOMY or AKASTOMUS. 



Text-fig. 89. 



367 



Syrinx of Amstomis oscitcms, front view. X 1. 

 M, Extrinsic muscle. 



Text-fig. 90. 



M 



%■ 



'^M 



# 



Syrinx of Anastomus oscitans, back view. X 1. 

 M, extrinsic muscle P, pessulns, 



