. Bulletin - United States National Museum. Science. 60 BULLETIN 171, UNITED STATES NATIONAL MUSEUM magister. The specimens compare favorably in size with the cotype material from Carlisle Cave, Pa., being somewhat larger and deeper jawed than in an average living specimen of A^. pennsylvanica}* The Cumberland Cave specimens are characterized by a relatively long mandibular symphysis, robust incisors, and cheek teeth with postero- external reentrant folds widely U-shaped and deeply pocketed at Figure Z2.—Neotoma magister Baird: Left ramus of mandible ( no. 12033), lateral and oc
. Bulletin - United States National Museum. Science. 60 BULLETIN 171, UNITED STATES NATIONAL MUSEUM magister. The specimens compare favorably in size with the cotype material from Carlisle Cave, Pa., being somewhat larger and deeper jawed than in an average living specimen of A^. pennsylvanica}* The Cumberland Cave specimens are characterized by a relatively long mandibular symphysis, robust incisors, and cheek teeth with postero- external reentrant folds widely U-shaped and deeply pocketed at Figure Z2.—Neotoma magister Baird: Left ramus of mandible ( no. 12033), lateral and occlusal views. X2. Cumberland Cave Pleistocene, Maryland. The Cumberland form is readily distinguished from N. jloridana by its greater size, larger incisors, and relatively longer diastema between incisor and cheek teeth. N. ozarkensis Brown (190S, pp. 196-197) is apparently somewhat smaller than the Cumberland Cave wood rat, presumably nearer in size to A^. pennsylvanica. Table 18.—Measurements (in millimeters) of mandible and inferior dentition of Neotoma magister Measurement Lencth of lower molar series measured at occlusal surface Length of lower molar series measured along alveoli Ml, anteroposterior length Ml, transverse width M}, anteroposterior length Mj, transverse width Mj, anteroposterior length Mj, transverse Depth of ramus at junction of Mj and Mi no. 12033 L9 no. 12034 10 3 L0 PARAHODOMYS SPELAEUS Gidley and Gazin '• Figures 33, 34 Type.—Portion of the right ramus of a mandible (young individual), no. 12040 (fig. 33), with all cheek teeth and part of alveolus for incisor. Generic characters.—Cheek teeth in general structure as in Hodomys, but with reentrant valleys, especially the external ones, shallower and n The possibility of N. pennsytvanica Stone being a synonym of N. magister Baird was noted by Rhoads, 1894, pp. 213-221. i« Qidley and Gazin, 1933, pp. 350-357,
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