. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 19. Lower cheek teeth of Incamys bolivianus, x5. Dotted areas are matrix. A. PL) no. 20921, Rdm4-M,. B. PL) no. 21726, Ldm^-Mj, partly restored from right side. C. PU no. 20975, LP^-M,. D. PU no. 20918, LP^. E. PU no. 20930, RP4. F. PU no. 20919, RP^-Mj. G. PU no. 20935, LP4-M2. H. PU no. 20937, RP^-Mj. I. PU no. 20948, RP4-M,. J. PU no. 21735, LP4-M2. K. PU no. 20936, RM,.^. L. PU no. 20916, Unworn or little worn upper molars (Fig. 17A,B; Hoffstetter and Lavocat, 1970: Fig.; Lavocat, 1976: PI. 4, Fig. 1
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 19. Lower cheek teeth of Incamys bolivianus, x5. Dotted areas are matrix. A. PL) no. 20921, Rdm4-M,. B. PL) no. 21726, Ldm^-Mj, partly restored from right side. C. PU no. 20975, LP^-M,. D. PU no. 20918, LP^. E. PU no. 20930, RP4. F. PU no. 20919, RP^-Mj. G. PU no. 20935, LP4-M2. H. PU no. 20937, RP^-Mj. I. PU no. 20948, RP4-M,. J. PU no. 21735, LP4-M2. K. PU no. 20936, RM,.^. L. PU no. 20916, Unworn or little worn upper molars (Fig. 17A,B; Hoffstetter and Lavocat, 1970: Fig.; Lavocat, 1976: PI. 4, Fig. 1) are approximately as long as wide at the occlusal surface and are tetralophate, sometimes with a minute projection from the anterior slope of the posteroloph of M^~^. As in P, the anteroloph is usually separated from the combined protoloph and mure by a deep hypoflexus, but, in contrast to P*, the labial notch, the para- flexus, between the two crests is very shallow (Figs. 17B, M^; 17G, M^ or M^ 18A,C, M^). The hypoflexus becomes pro- gressively more extensive, vertically, in the posterior part of the molar series. On M' it extends up for approximately half the height of the crown, on M^ rather more, and on M^ it comes close to the base of the enamel (PU no. 20947, Fig. 18A, is exceptional in having an exten- sive hypoflexus on M^). The protoloph sweeps lingually and posteriorly to the hypocone, which is also connected from the beginning of wear with the postero- loph. On the anterior face of the latter crest, a small projecting crestlet is pres- ent on M^~^. The metaloph does not meet the protoloph. The mesoflexus has the deepest labial notch, and the metaflexal. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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