THE OSTRACODA 



Nervous System. The supraoesophageal ganglion is largest in 

 the Cypridinidae in correlation with the presence of paired eyes in 

 that family. The ventral nerve-chain is represented by a single 



p 



FIG. 38. 



Cypridina mni:ti i-rnnra. Female (above) and male (below). One valve of shell removed to 

 show appendages and internal organs. A", antenna (the antennule is just above) ; F' (below), 

 fourth post-oral limb ; F' (above), tilth post -oral limb ; Fii, caudal furca ; G, brain ; H, heart ; 

 M, mid-gut: Mi If, mandibular palp; MX', maxillula ; MX", third post-oral limb (maxilla); 0, 

 pairrd eye ; ()', median eye ; P, penis ; S.M, adductor muscle of shell ; ,Ste, frontal tentacle ; T, 

 testis. (From Claus's 



