On a Mandible of Machærodus from the Forest-bed

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Abstract
About two months ago I obtained from the Forest-bed of Kessingland, Suffolk, a specimen which I take to be the right mandibular ramus of a species of Machærodus (Plate X.). As I believe that no example of the lower jaw of any species of this genus has been met with in this country, I venture to send the following description of it. Length from posterior margin of condyle to upper edge of symphysis at insertion of second incisor 204 mm. Vertical depth below premolar at shallowest part of ramus 38·25 mm. Depth at middle of diastema 51 mm. Depth at lowest point of symphysis 63·75. Originally the depth at this point has apparently been 70, if not 75 mm. The diastema is large (41 mm.) and, like the portion of the ramus immediately beneath it, curved inwards; it presents a fossa of 6 or 7 mm., from the direct line between the canine and cheek-teeth, for the accommodation of the upper canine. The anterior foramen is large, and in a line parallel to the adjoining base of the ramus. The condyle is imperfect, the length of the remaining portion being 38·2 mm., and the vertical thickness 19·1 mm. The coronoid process has lost its upper third, the remaining portion being 25 mm. in height and 38 mm. in width at the base. In regard to the teeth, the sectorial has an antero-posterior diameter of 32 mm.; it is much worn diagonally by the action of the corresponding upper tooth, and

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