. Geological magazine. h read Geneffeh. ,, ,, 387, description of plate, for here row read horizon. ,, ,, 388, line 9 from bottom, for there read those. ,, ,, 391, footnote,/or Zib read Tib. ,, ,, 392, line 17 from bottom,/or about rmt? almost. ,, ,, 392, ,, 3 from bottom, for Ostrea succinea^ read Ostrea succini. 11.—Synopsis of the Genera and Species of Cakboniferous Limestone Trilobites. By Henry ?Woodward, , , (PLATE XVI.) SINCE the appearance of my paper in the Geological Magazine,1883, Decade II. Vol. X. pp. 534-542, the following specieshave been added to the list of B
. Geological magazine. h read Geneffeh. ,, ,, 387, description of plate, for here row read horizon. ,, ,, 388, line 9 from bottom, for there read those. ,, ,, 391, footnote,/or Zib read Tib. ,, ,, 392, line 17 from bottom,/or about rmt? almost. ,, ,, 392, ,, 3 from bottom, for Ostrea succinea^ read Ostrea succini. 11.—Synopsis of the Genera and Species of Cakboniferous Limestone Trilobites. By Henry ?Woodward, , , (PLATE XVI.) SINCE the appearance of my paper in the Geological Magazine,1883, Decade II. Vol. X. pp. 534-542, the following specieshave been added to the list of British Carboniferous LimestoneTrilobites, and will form a part of the forthcoming volume of thePalffiontographical Society for the present year. Geiffithides brevispinus, H. Woodw., 1884. Plate XVI. Fig. 4. Griffithides brevispinus, H. Woodw., Pal. Soc. Mon. Carb. Trilob. part ii. 1884, , plate vii. figs. 7, 8. Among the various specimens received from Mr. Eobert Craig, of G€]B8± GTt Wc- o cLwai-d. del. Carl^oTii-ferous- TrLIob-ctes. Carboniferous Limestone Trilobites. 485 Langside, Beith, Ayrshire, , are two fragments of heads of asmall species of Trilobite of the genus Grijithides, which, as thediscoverer observes, appear to differ from any which have hithertocome under notice from the Carboniferous Limestone. The head isnearly twice as broad as it is long, the free-cheek terminatinglaterally in a short spine ; the eye, which is very smooth, is rounderand more tumid than in other species, and the facets, which arereadily discernible with a Brownings platyscopic lens, are veryminute, and do not break the smooth hyaline surface of the com-pound eye. The glabella is nearly smooth in front, and overhangs the anteriorborder of the head-shield, the posterior portion of the glabella andthe neck-lobe are irregularly tuberculated. The free-cheek is alsotuberculated, and has about eight tubercles on each cheek, placed ina semicircle around the
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