. Description of a new crustacean from the Clinton group of Georgia ... . ing directly from the cephalic shield in front of the glabella, and in this respect resembles Homalonotus rhinotropis of Angclin, a species which has been referred by Salter, in his Monograph of British Trilobites, to IT. Knightii. Salter says " the front Fi?- 1- margin is of most singular structure and may be described as tricuspid. The nar- row edge is so deeply indented, and at the same time folded, that the front por- tion overhangs the rostral shield, forms i 'ai„„.cne ro.,rn,a Vogdes The 0^6 projectiug auglc f
. Description of a new crustacean from the Clinton group of Georgia ... . ing directly from the cephalic shield in front of the glabella, and in this respect resembles Homalonotus rhinotropis of Angclin, a species which has been referred by Salter, in his Monograph of British Trilobites, to IT. Knightii. Salter says " the front Fi?- 1- margin is of most singular structure and may be described as tricuspid. The nar- row edge is so deeply indented, and at the same time folded, that the front por- tion overhangs the rostral shield, forms i 'ai„„.cne ro.,rn,a Vogdes The 0^6 projectiug auglc flaukcd by two smaller fl:i'^S^^^'^'^'W^^^^^ opposite the axial furrows, ex- actly like the salient and re-entering angles of a ; Our species has only the central triangular projection, the mar- gins of which are deflected, and the marginal border unites and forms a triangular projection, directly in front and on the median line. The following characteristics are drawn from three specimens, consisting of the glabella and fixed cheeks, and many pygidia found associated with them at the same locality. The glabella is convex and widens out posteriorly, being con- tracted in front; the sides arc marked with three lobes, the basal one large, the middle lobe nearly spherical, the third is somewhat obscurely defined. The fixed cheeks are separated from the glabella by deep dorsal furrows, but opposite the eyes the furrows are restricted by a buttress thrown across it, nearly touching the middle side lobes ; the cheeks are gibbous but not elevated above the glabella, they are narrow along the sides of the glabella and widen out laterally from the eyes. The facial sutures cut the posterior angles of the head, but anteriorly from the eyes these lines run almost straight with a slight tendency outward, and pass over the margin. The neck furrow is con- tinued nearly to the posterior anirles of the head. The frontal limb is triangular in outline, and prolonged into a p
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishernewyork, bookyear18
