. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fig. 081.—Bumastus barriensls. , see Illeenus luxus. trentonenxis, see lUsenus trentonensis. , Matthew, 1888, Trans. Roy. Soc. Can., p. 56. Body ovate-eiongate, tri- lobed longitudinally; cephalic shield Bubtriangtilar, with rounded angles; composed of a glabella, fixed ciieeks and movable (?) cheeks; glabella broadly cylindrical and rounded in front; fixed cheeks expanded in front, and having
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fig. 081.—Bumastus barriensls. , see Illeenus luxus. trentonenxis, see lUsenus trentonensis. , Matthew, 1888, Trans. Roy. Soc. Can., p. 56. Body ovate-eiongate, tri- lobed longitudinally; cephalic shield Bubtriangtilar, with rounded angles; composed of a glabella, fixed ciieeks and movable (?) cheeks; glabella broadly cylindrical and rounded in front; fixed cheeks expanded in front, and having ear-shaped lateral lobes de- fined by an impressed line which may have been movable; thorax, so far as known, had seven segments, and con- sisted of an elongate cylindro-conical body, having triangular lappets or Sleiirse attached at the sides. Type B. orrida. horrida, Matthew, 1888, Trans, Roy. Soc. Can., p. 56, Up. Silurian or Low. De- vonian. Oalyubne, Brongniart, 1822, Hist. Nat. Crust. Foss., p. 7. [Ety. kekalymenos, concealed.] Cfephalic shield sublunate, margin thickened, distinctly defined; glabella convex, narrower in front tlian Behind, three lateral furrows on each Bide, the posterior one deep, neck seg- ment well defined, eyes, small, promi- nent, hiant, near the glabella fur- rows, and slightly anterior to the middle; facial sutures cut the mat-gin, in front of the eyes and curvipg slightly over each eye, defining a semicircular eye-lobe, they extend to the lateral an- gles, each of which is exactly biseete 1; anteriorly they are connected by \ rostral suture, thorax of thirteen Rpg. ments, axis most convex, lateral iobes wider than axis^ bent down with lar^^e facets; pygidium semi-oval, axio prominent, seven to eleven segment), margin entire. Type C. blumenbacljj. anchiops, nee Dalmanites anchiops. becki, see Triarthrus becki. blumenbachi, Brongniart, 1822, Hist. Ntt. Crust. Foss., p. 11. Amerirua form called C. niagarensis. bucklandi, syn. for Ceraurus pleur
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