. Geological magazine. one of the specimens with the extensive collection of teethin the National Collection, and informs me that it is unknown to him. I believe I am correct in referring them to the above recentlyestablished genus, although one of the characters ascribed to Fissodus,viz. the ear-like lateral angles, is certainly not represented here,the latter being definitely rounded. Of the two described species,Fissodus hijidus, St. J. and W., and F. tricuspidatus, St. J. and W.,our tooth very closely resembles the former; but there is the partialgeneric difference noticed above, and there
. Geological magazine. one of the specimens with the extensive collection of teethin the National Collection, and informs me that it is unknown to him. I believe I am correct in referring them to the above recentlyestablished genus, although one of the characters ascribed to Fissodus,viz. the ear-like lateral angles, is certainly not represented here,the latter being definitely rounded. Of the two described species,Fissodus hijidus, St. J. and W., and F. tricuspidatus, St. J. and W.,our tooth very closely resembles the former; but there is the partialgeneric difference noticed above, and there is an entire absence ofimbricating ridges at the base of the crown, in addition to otherminor points. Loc. and Horizon.—Obtained by Mr. A. Patton from shale im-mediately above the Calderwood Cement Stone, Lower CarboniferousLimestone Group, at the Kirktonholra Cement Mine, East Kilbride,Lanarkshire ; also roof of the Splint Coal, Edge Coal Series, Dean GP;01, 7 7. ]S[kvv Sr RiK !^ JECABK ,ATE Ichlhyodor-al 11e s. Carb ^nd. R. Etheridge, Jun.—Contributions to FakBontology. 307 Pit, Kinniel, near Boness.—Collection of the Geological Survey ofScotland, collected by Mr. James Bennie. Genus Oracanthus, Agassiz. Oracanthus Ifilleri, Agassiz. Plate XIII. Figs 4-6. 0. Milleri, k^.; Rech. Poissons Foss. vol. iii. (1833-34), p, 13, Atlas iii. t. 3, f. 1-4.„ „ MCoy, Brit. Pal. Foss., p. 634. Spine.—Four-sided, more or less laterally flattened, tapering, hollownearly to the apex, substance thin. Apex where broken = 10 linesby 4-| lines; base = 2 inches 2 lines by 1 inch (about). Section ofthe base transversely oval; section of the apex oval, wider at oneend than the other, solid. Anterior end (?) narrower than theposterior; posterior end (?) flattened, at right angles to the large, occupying the whole of the internal portion of theray, but terminating towards the apex at the fractured point. Sur-face covered with conical, flu
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Keywords: ., bookauthorwoodward, bookcentury1800, bookdecade1870, bookyear1877
