. Annual report. 1st-12th, 1867-1878. Geology. PACKARD.] PHYLLOPODS OF NOETH AMEEICA. 311 Genus LIMNADIA Brongniart. Limnadia Brongniart, Me"moires du Museum d'Hist. Nat. VI, PI. 13, 1820. Milne-Edwards, Hist. Nat. des Crustacea III, 561, 1840. Shell broad, flat, with, about IS lines of growth, disappearing near the very flat nearly obsolete beaks; 22 pairs of feet. LlMNADIA AMERICANA Morse. Limnadia americana Morse. Proc. Bost. Soc. Nat. Hist. XL First Book of Zoology. Fig. 138, L., 1875. Shell (Fig. 13 in text) large, broad, ovate, much flattened, with 18 lines of growth; smooth and shi
. Annual report. 1st-12th, 1867-1878. Geology. PACKARD.] PHYLLOPODS OF NOETH AMEEICA. 311 Genus LIMNADIA Brongniart. Limnadia Brongniart, Me"moires du Museum d'Hist. Nat. VI, PI. 13, 1820. Milne-Edwards, Hist. Nat. des Crustacea III, 561, 1840. Shell broad, flat, with, about IS lines of growth, disappearing near the very flat nearly obsolete beaks; 22 pairs of feet. LlMNADIA AMERICANA Morse. Limnadia americana Morse. Proc. Bost. Soc. Nat. Hist. XL First Book of Zoology. Fig. 138, L., 1875. Shell (Fig. 13 in text) large, broad, ovate, much flattened, with 18 lines of growth; smooth and shining; allied to of Europe. Length of shell, ;™; breadth, 9mm. Museum of Peabody Academy, collected by Mr. Tufts, at Lynn, Mass. Genus EL LIMNADIA Packard. Eulimnadia Packard, Sixth Eeport Peab. Acad. Sc. Salem., 55, June, 1874. Hayden's U. S. Geol. and Geogr. Surv. Eep. for 1873; 618, 1874. Shell narrow, oblong, oval, riot nearly as wide as in Limnadia, with only 4 or 5 lines of growth; the dorsal edge straighter, less curved than in Limnadia; 18 pairs of feet. The head and antennae do not differ essentially, but the gills are much larger than in Limnadia; while the upper or dorsal lobe of the flabellum is much smaller than in Limnadia. The Australian Limnadia stanleyana King and L. antillarum Baird are congeneric with our E. agassizii and texana. /Synopsis of the Species. Shell narrow-ovate, with 4 lines of growth E. agassizii. Shell narrower than in preceding, more oblong, with 5 lines of growth; 2d antennae longer, more spiney and hairy than in foregoing spe- cies . E. texana. Eulimnadia agassizii Packard. Plate VII, figs. 5, 6. Eulimnadia agassizii Packard, Sixth Eep. Peab. Acad. Sc, 54, 1874. Hayden's U. S. Geol. and Geogr. Surv. for 1873. 618, 1874. Carapace valves whitish, very transparent, quite regularly oval, nar- rower than usual, somewhat trun- cate at the end, widest slightly in front of the middle, with four lines of growth, valves much more con
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