82 BRACHIOPODA. 



with the arms folded on themselves, spiral at the 

 tips. 



T. caput-serpentis. Fig. 122 ; n, s. 

 cranium. 



Argiope (Deslongch.). Shell broad, semi-oval ; 

 hinge-line wide and straight ; perforation large ; 

 interior of dorsal valve with several partitions ; 

 loop two or four lobed, adhering to the partitions. 

 Animal with the arms folded into two or four 

 lobes, united bj a membrane, not spiral. 



A. cistellula. Fig. 123; mag. 



