. 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 D. Fig. 1. Lathonura rectirostris. female, from above, a. eye. b. optic ganglion, c. mus-cles of eye. d. muscles of antenna, e. dorsal suckingdisc, f stomach, g. young in brood cavity. Fig. 2. female, from side. Fig. 3. head seen from below. Fig. i. maxillee. Fig. 5. first foot. Fig. 6. ovary. Fig. 7. antennule. Fig. 8. last foot. MINNESOTA CRUSTACEA. ISth^nnuaZ Repor
. 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 D. Fig. 1. Lathonura rectirostris. female, from above, a. eye. b. optic ganglion, c. mus-cles of eye. d. muscles of antenna, e. dorsal suckingdisc, f stomach, g. young in brood cavity. Fig. 2. female, from side. Fig. 3. head seen from below. Fig. i. maxillee. Fig. 5. first foot. Fig. 6. ovary. Fig. 7. antennule. Fig. 8. last foot. MINNESOTA CRUSTACEA. ISth^nnuaZ Report PLATE n. Geol & PLATE E. Fig. 1. Alona quadrangular is, female. A. anteunule. Lb. labrum. Md. mandible. P-a. post-abdomeu. Au. anus. F, c. musculus flexor c. musculus extensor caudalis. A. g. anal gland,n. g. nutritive globule in embryo, t. tail of , II, III, IV, V. five pairs of feet of embryo, mx. maxillaof embryo, at^. antennae of embryo, at^ antennulesof embryo. H. heart. Sh. g. shell gland. Ov. m. muscle of mandible. At.^m. muscle of eye, s. ce. g. supra-cesophagal ganglion. P. F. pig-ment fleck. brain, eye and pigment fleck of procurvus, female,foot of excisa, female; 6a. shell of same,antennae of latissima, media, macrurus, post-abdomen,lower angle of shell of same. Fig. 2. Fig. 3. Fig. 4. Fig. 5. Fig. 6. Fig. 7. Fig. 8. Fig. 9. Fig. 10. Fig. 10a, MINNESOTA CRUSTACEA. 121/^ Annual Report PLATE E. GeoL & IfiU. Hist. Sur. Min n. - LJLJ , t q/ KALE
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