. 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 Q1 . Fig. 1. Diaptomus sp. Young male; external parts as yet butpartly developed showing alimentary and reproductivesystems as well as a portion of the muscular looped tube is the vas deferens. The small irreg-ularly coiled tube anteriorly is the shell-gland orkidney. Fig. 2. female with ovary, oviducts and heart. Figs. 3-4. Nauplius larva of same. Figs. 5-
. 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 Q1 . Fig. 1. Diaptomus sp. Young male; external parts as yet butpartly developed showing alimentary and reproductivesystems as well as a portion of the muscular looped tube is the vas deferens. The small irreg-ularly coiled tube anteriorly is the shell-gland orkidney. Fig. 2. female with ovary, oviducts and heart. Figs. 3-4. Nauplius larva of same. Figs. 5-6. fifth pair of feet of male and female. Fig. 7. mouth appendages, anteriorly the base of antennae fol-lowed by antennule, labrum, mandible with palp, max-illa and maxilliped. ^1 MINNESOTA [CRUSTACEA. From the 10th Annual Report. PTiATE Qi . Geol. <£- Ned. Hist. Sur. Minn,. PLATE Q Fig. 1. Osphranticum lahroi Fig. 2. antenuule. Fig. 3. maxilliped. Fig. 4. fifth feet of male. Fig. 5. palp of mandible. Fig. 6. end of abdomen. Fig. 7. feet of first pair. Fig. 8. eye. Fig. 13. maxilla. Fig. 14. mandible. Fig. 9. Cyclops afer, female Fig. 10. abdomen. Fig. 11. maxilliped. Fig, 12. antenna. MINNESOTA CRUSTACEA. From the ICth Annual Bepori. PLATE Q2. Geoh d-Nat. Hist. Sitr. Minn.
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