. The Quarterly journal of the Geological Society of London. r hand, Pleurophorvs had a large hinge-plate, bearingstrong cardinal teeth, so that the cast should be broad and bluntbeneath the beak (as in casts of Cardinia, so common in the LowerLias). There seems, then, to be little doubt that Moore correctlydiagnosed the genus. Quenstedt ( Der Jura pi. i, fig. 32) figuresa somewhat similar form, but the upper and lower borders con-verge backward : it can, therefore, scarcely be considered as identicalwith our specimen. Brauns (5) unhesitatingly refers Quenstedtsfigure to Anoplophora postera, a

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. The Quarterly journal of the Geological Society of London. r hand, Pleurophorvs had a large hinge-plate, bearingstrong cardinal teeth, so that the cast should be broad and bluntbeneath the beak (as in casts of Cardinia, so common in the LowerLias). There seems, then, to be little doubt that Moore correctlydiagnosed the genus. Quenstedt ( Der Jura pi. i, fig. 32) figuresa somewhat similar form, but the upper and lower borders con-verge backward : it can, therefore, scarcely be considered as identicalwith our specimen. Brauns (5) unhesitatingly refers Quenstedtsfigure to Anoplophora postera, and only doubtfully includes Mooresspecies as a synonym. It seems, therefore, very uncertain whetherwe have found the species that is so common in the bottom bedsin Germany. Our specimen was derived from the main Aiicirfa-he&s. Carditjm cloacixum, Qu. (Text-fig. 6.) Average dimensions : horizontal, 14| millimetres; vertical, 13 largest specimen that we found measured 221 mm., vertically. Fig. 6.—Cardium cloacinum, Qu. (mcujaijied S\ diameters)..

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Keywords: ., bookcentury1800, bookdecade1840, booksubjectgeology, bookyear1845