Amphioxus 
q -= 
} , 
Piychodera minuta 
Schizocardium 
brasiliense 
Glandiceps 
Hackst 
\) 
amt 
UT 
, 
— 
=> 
~ 
= 
Balanogtossus | 
Kowalewshi 
—. 
— 
as 
Plychodera aurantiaca 
Balanoglossus 
Ptychodera minuia Kupffert 
ee SS ee ee ne ee ee 
Balanoglossus 
Kowalewskit 
Schizocardium 
Peruvianum 
Edwin Wilson. Cambridge. 
