CRUSTACEA OF ALABAMA. 55 



Fig. 20. do. fifth foot. 



Fig. 21 Epischura fluviaiilis, Herrick, abdomen of male. 



Fig. 22. do. fifth feet of female. 



Fig. 23. do. fifth feet of male. 



Fig. 24. do. one of swimming feer. 



Fig. 25. Simocephalus daphnoides, Herrick. 



Fig. 26. do. posterior margin of shell. 



-Fig. 27. do. upper angle of abdomen. 



Fig. 28. do. portion of antennae. 



Plate III. 



Fig. , 1. Alona sp. from Mobile Bay. ' 



Fig. 2. Psendosida tridentata. Herrick. 



Fig. 3. do. antennule of female. 



Fig. 4. do. post-abdomen. 



Fig. 5, 6, do. first foot and maxilla. 



Fig. 7. Cypris perelegans, Herrick, side view. 



Fig. 8. do. seen from above. 



seig. 9. do. appendages of labrum. 



Fig. 10. do. jaw. 



Fig. 11. do. abomen. 



Fig. 12. do. natural size. 



Fig. 13. Moinodaphnia alabamensis , Herrick. 



Fig. 14. do. antennule. 



Fig. 15. do. first foot. 



Fig. 16. do. antennae. 



Fig. 17. do. post-abomen. 



Plate IV. 



Cypridopsis vidua, iemale from above, ia, antenna, ib, second antenna, ic, first foot, id, sec- 

 ond foot, ie, mandible, if, maxilla of male, ig, labrum from below. 



Cypris minncsotensis, female from side. 2a, anterior antenna, 2b, second antenna, 2c, first foot, 

 2d, second foot, 2e, mandible, 2h, caudal stylet. 



Cypris striolata, female from side, with portion of shell enlarged. 



Noiodromas monacha, 4d, last foot, 4h. caudal stylet. 



Cypris modesta, male from side, 5*, female from side, 5a, anterior antenna, 5b, second antenna, 

 jc, first foot, 5h, caudal stylets, sx, intromittant organ of male. 

 Fig. 6. Cypridopsis hystrix, side view of female, 6*, anterior and posterior margins enlarged, 6a, ante- 

 rior antenna, 6b, second antenna, 6c, first foot, 6h, end of abdomen with second foot and 

 stylets, 6y, lucid spots. 

 Fig. 7. Cypris simplex, outline of shell of female from the side, 7, from the side, 7*, from above, 7b, 

 second antenna, 7d,h, stylets and second foot, 7p, edge of shell, 7y, lucid spots. 



Plate V. 



Larval shrimp, Palozinonetes, sp ? 



Gammarus mucronatus, Say. a, mandible and palp, b, first foot, c, second foot. 



Sesarmia sp. (reticulatus ?) a, right male chela, b, antenna, c, abdomen of male, d, abdomen of 



female, e, second abdominal foot of male. 

 Gelasimus vocator, right chela of male, a, left chela. 

 Palcemonetes paludosus, antennule, a, first cheliped, b, rostrum, c, second cheliped, d, same, e, 



one of abdominal feet, f. end of telson, g, first abdominal foot, h, last pair, i, setae of same. 

 Fig. 6. Penmus setiferus. 



Fig. 



1 



Fig. 



2 



Fig. 



3 



Fig. 



4 



Fig. 



5' 



Fig- 

 Fig. 



1. 

 2. 



Fig- 



3- 



Fig. 

 Fig. 



4- 



5- 



