PLATE 15. — Entomostraca. 



Figure 



1 . Aryulus foUaceus, seen from beneath, a, anterior, b, posterior antennae ; c, 



rostrum ; c?, suckers, representing the first pair of legs ; e, second pair of 

 legs ; y, four posterior pairs of legs. 



2. Bosmina longirostris ; 2*, the same, natural size. 



3. Branckijius stagnalls. 4. Camptocercus macrourus. 



5. Candona reptans-, 5 «, inferior antenna. 



6. Canthocamptus minutus ; 6 «, inferior antenna ; 6 b, first pair of foot-jaws ; 



6 c, second pair of foot-jaws. 



7. Ckydorus sphcBricus. 



8. Ci/cloj^s quadricornis, male. . «, 5, superior antennae. 



9. Cyclops quadricornisj female, a, superior, 6, inferior antennae ; c, external 



ovaries. 



10. Cyclops qiiadricornis ; inferior antenna. 



1 1 . Cyclops quadricornis ; mandible. «, body ; 5, serrated seta ; c, filaments of 



palp. 



12. Cyclops quadricornis \ first pair of foot-jaws. 



13. Cyclops quadricornis \ second pair of foot-jaws ; 13 «, internal portion ; 13 ^, 



external portion. 



14. Cyclops quadricornis \ first pair of thoracic feet. 



15. Cyclops quadricornis ; fifth pair of legs. 



16. Cyclops quadricornis \ recently hatched. 



17. Cypris tristriata. 18. Cypris tristriata ; superior antenna. 

 19. Cypris tristriata ; inferior antenna. 20. Cypris tristriata -, mandible. 



21. Cypris tristriata ; first pair of jaws, a, basal plate ; 6, branchial lamina. 



22. Cypris tristriata -J secondpair of jaws. 23. Cypris tristriata ; first pair of legs. 



24. Cypris tristriata ; second pair of legs. 



25. Cypris tristriata-, lateral half of the abdomen. 



26. Cy there inopinator. 27. Baphnella Wingii. 



28. Baphnia pulex. a, superior antennae; b, inferior antennae ; c, heart. 



29. Baphnia pulex ; first pair of legs. 30. Baphnia pulex ; second pair of legs. 

 31. Baphnia pulex ; third pair of legs. 32. Baphnia pulex ; fourth pair of legs. 

 33. Baphnia pulex ; fifth pair of legs. 34. Baphnia pulex ; mandible. 



35. Baphnia pulex \ labrum. 36. Baphnia pulex \ jaw. 



37. Baphnia reticulata, «, ephippium. 38. Biaptomus castor. 

 39. Eurycercus lamellatus. 



