ClipArt ETC
"Cyclops type. I A., first antenna; II A., second antenna; OV., ovary; R.S., receptaculum seminis; OS., ovisac; F., caudal fork." -Thomson, 1916

Cyclops

"Cyclops type. I A., first antenna; II A., second antenna; OV., ovary; R.S., receptaculum seminis; OS.,…

"Daphnia. E., Eye; A.2, second antenna; A.1, first antenna; dg., digestive caeca; s.g., shell gland; go., gonad; h., heart in pericardium; o., ovum; B.p., brood-pouch; sp., spine; f., furca; s., setae; Ab., rudimentary abdomen; t., caudal fork; g., gut; 1-5, thoracic limbs." -Thomson, 1916

Daphnia

"Daphnia. E., Eye; A.2, second antenna; A.1, first antenna; dg., digestive caeca; s.g., shell gland;…