. A final report on the Crustacea of Minnesota, included in the orders Cladocera and Copepoda, together with a synopsis of the described species in North America, and keys to the known species of the more important genera . PLATE C. Fig. 1. teniiicornis, la. labrum. Fig. 2. do., first foot. Fig. 3. do., antenuye of young. Fig. 4. Macrothrix pauper. Fig, 5. il/rtc>o/Ari> rosm, antenna of male. Fig. 6. do., spines of shell-margins. Fig. 7. do., post-abdomen. Fig, 8. Macrothrix laticornis, male. Fig. 9. do., semen cells. Fig. 10, Pasithea rectirostris, male antenna. Fig. 11. Mac
. A final report on the Crustacea of Minnesota, included in the orders Cladocera and Copepoda, together with a synopsis of the described species in North America, and keys to the known species of the more important genera . PLATE C. Fig. 1. teniiicornis, la. labrum. Fig. 2. do., first foot. Fig. 3. do., antenuye of young. Fig. 4. Macrothrix pauper. Fig, 5. il/rtc>o/Ari> rosm, antenna of male. Fig. 6. do., spines of shell-margins. Fig. 7. do., post-abdomen. Fig, 8. Macrothrix laticornis, male. Fig. 9. do., semen cells. Fig. 10, Pasithea rectirostris, male antenna. Fig. 11. Macrothrix rosea, post-abdomen. Fig, 12, Macrothrix fenuicornis, Fig, 13. Macrothrix rosea, post-abdomen of male. Fig, 14. Drepanothrix clentata, antenna. Fig. 15, Ihjocrijptus sordidus, marginal spines. Fig, 16. do,, antenna. Fig, IT. do,, post-abdomen. Fig. 18. Ilyocrijptiis spinifer, 18a. marginal spines. Fig. 19. do., antenna. Fig. 20. Macrothrix fenuicornis, heart and accompanying vessels Fig. 21. Ihjocrijptns spinifer, post-abdomen. MINNESOTA CRUSTACEA. i ^AnnualReport PLATE C. Geol & Nat Hist. Sur. ;g\CAr
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