THYSANOPODA COUCHII. 



cut ; a, superior antenna) ; 5, inferior antennae ; c, lower 

 lip ; d, first maxilla ; e, second maxilla ; /, mandible ; ^, 

 one of the thoracic feet, with branchia attached ; 7i, a 

 branchia; i, abdominal false foot; fc, middle caudal lamina; 

 , lateral caudal lamina?. 



