EXPLANATION OF PLATES. 
357 
Tab. XI. 
Figs. 1, 2. Moina rectirostris , male and female. 
1 a. Antennule of male 
3. Daphnia puleoc ; var. magno , female. 
4, 5. Male of do. 
Fig. 4 represents the male in a very young state, previous to its 
final moulting, and before it assumes its perfect form. 
5 a . Antennule of male. 
Tab. XII. 
Fig. 1. Daphnia reticulata , male. 
a. Antennule. b. One of the first pair of feet. 
2. D. reticulata ; var. quadrangula. 
3. Sida crystallina , female. 
Fig. a. Head magnified, in profile, b. Antennule c. Eye. 
e. Stomach, f. Mandible, g. Labrum. q. Organs by 
which the animal attaches itself to objects, r. Heart. 
Fig. b. Eye magnified, to show the disposition of the crystallines 
or facets. 
4. Sida crystallina , young. 
Tab. XIII. 
Fig. 1. Sida crystallina . 
a. Antennule. b. Large antenna or ramus, c. Mandible, d. One 
of the first pair of feet, e, f. Fourth pair of feet. g. Sixth 
pair of feet, h. Abdomen. 
Tab. XIY. 
Fig. 1. Daphnella Wingii , female. 
3. Do. supine. 
4. Head of do. highly magnified. 
a. Stomach, b. Antennule. c. Eye. f Mandible, g. Labrum, 
i. Heart, o. (Esophagus. 
2. D. Wingii , male. 
a. Antennule. b. Abdomen. 
