. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. [ACA.—BAR. HAT. -HOI,.] CRUSTACEA. ) e cephalic shield ol the grooves at the : furrow ; the fixe<l free cheeks by the some other genera: ;he plennu ; the di- e auchylosed. The irex buckler, corn- all lahrum and six n. li, p. 62, from the Whitfield, 18!t0, Ann. ;), Trenton Gr. ite, labrum, or hy- ler ; xtoma, mouth ;) jeply forked liebind. and branchial fila- e illustration of the in the Jour, of the
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. [ACA.—BAR. HAT. -HOI,.] CRUSTACEA. ) e cephalic shield ol the grooves at the : furrow ; the fixe<l free cheeks by the some other genera: ;he plennu ; the di- e auchylosed. The irex buckler, corn- all lahrum and six n. li, p. 62, from the Whitfield, 18!t0, Ann. ;), Trenton Gr. ite, labrum, or hy- ler ; xtoma, mouth ;) jeply forked liebind. and branchial fila- e illustration of the in the Jour, of the list.) as well as the I, are largely imagin- n doL'8 not show the Icott, 1890, (Conoc- ) 10th Ann. Rep. 640, Up. Taconic. 00, 10th Ann. Rep. 646. Type A. man- at the same place lie. Synop. Fobs. Ire- ty. proper name.] from a broadly tri- elongate subtrian- xtremities more or smooth and setifer- ictate; no central ots well marked; trenchant; when the right valve lie eft; interior of the xcept on the dorsal narrow lamelliform except that a slight luently apparent at ngeline; the dorsal ve is quite simple, carapace, underlies le left valve, which rlapping; ventral Type B. curta. 1890, Quar. Jour. 648, Hud. Riv. Gr. 00, Jour. Gin. Soc, p. 210, Kaskaskia iminoides, p. 197, iOO, Jour. Gin. Soc. ». 198. [Ety. haru», 3, a lip.] Carapace 1 or ovate; valves right the larger, except in the pos- terior half of the more or less convex i dorsal side; the edges of the valves in this portion of the back are smooth, and resemble a pair of thick lips; edges of both valves thick and smooth all around, that of the right valve much the heavier; a sharply defined, narrow or rounded umbilical pit; sur- face striate. Type IJ. punctostriata, which, with B. punctostriata var. curta and B. pulchella, are described at the same place from the I'p. Held, or Ham. Gr. Bathvuuei,m:(s, Whitfield, 18!i(). Hull. Am. Mus. Nat. Hist., vol. 15, p. 38, I'p. Taconic or Calciferous. Batiiyukihcus dawsoni, Walco
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
