. Anatomischer Anzeiger. Anatomy, Comparative; Anatomy, Comparative. 113 asserting that the occurrence of supernumerary molars in the horse tribe is far from common; and that, therefore, no cases that are met with should be allowed to go undescribed. On this account two additional cases (for both of which I am indebted to my colleague, Professor Dunstan) are made the subject of the present communi- cation. It is much to be regretted that both specimens are fragmen- tary, and consist of only part of the mandible in each case. But in neither of them is the condition of the supernumerary teeth in
. Anatomischer Anzeiger. Anatomy, Comparative; Anatomy, Comparative. 113 asserting that the occurrence of supernumerary molars in the horse tribe is far from common; and that, therefore, no cases that are met with should be allowed to go undescribed. On this account two additional cases (for both of which I am indebted to my colleague, Professor Dunstan) are made the subject of the present communi- cation. It is much to be regretted that both specimens are fragmen- tary, and consist of only part of the mandible in each case. But in neither of them is the condition of the supernumerary teeth interfered with in any way. Inasmuch as the mandibles are not accompanied by the rest of the skull, it is impossible to say with absolute certainty what the disposition of the upper teeth may have been. But it is always possible to arrive at some conclusion as to the condition of the teeth in an absent jaw, from an examination of the inequalities of the wearing surface on the teeth which are available for inspection. And this is more readily done in connection with the cheek-teeth of the horse than it is with the majority of teeth; for on the equine premolars and molars there are definitely arranged transverse ridges and grooves, from which may be gathered information regarding the number and size of the opposed teeth. Case Ko, I (Fig. 1). This |.r specimen is in the form of part of the mandible of a horse from which the rami have been cut off immediately posterior to the last tooth. This muti- lation does not, in any way, detract from the value of the specimen so far as the teeth are concerned. On the right side of the mandible the teeth oas, Fig. 1. 2)m^ second premolar. m^ third molar (on the right side a, portion has been broken off = *). ' '^-^ / '^ ^=-"''-^ '^ *• m* superniimei'ary m, Ä Anat, Anz. XXIV. Aufsä Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and
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