302 PHYLUM ARTHROPODA. 
Fic. 156.—Cypris, side view, after removal of one valve.— 
After Zenker. : 
z., Eye; A.J, first antennz ; 4.2, second antenne; AZ.V., mandibles ; 
mx.1, first maxilla ; 72.2, second maxilla; /.7, £2, thoracic legs 5 
Aé., rudimentary abdomen, 
Fic. 157.—Cyclops type. 
JA,, first antenna; // A., second antenna; OV., ovary; R.S., 
receptaculum seminis; OS., ovisac; /., caudal fork. 
