. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 1^. Labial view of left mandibular rami of Peromyscus nutialli ( 1491, top), P. gossypimis, fossil ( 17778, tenter), and P. gossypinus ( 3226, bottom). IB. Labial view of left mandibular rami of Oryzomys couesi ( 1532, top), 0. palustris, fossil 17786, center), and 0. palustris ( , bottom). two scars {M. masseter medialis) in 0. couesi is deeply concave upward having its most ventrad extension under the point be- tween Ml and M2. In contrast, the most ve
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 1^. Labial view of left mandibular rami of Peromyscus nutialli ( 1491, top), P. gossypimis, fossil ( 17778, tenter), and P. gossypinus ( 3226, bottom). IB. Labial view of left mandibular rami of Oryzomys couesi ( 1532, top), 0. palustris, fossil 17786, center), and 0. palustris ( , bottom). two scars {M. masseter medialis) in 0. couesi is deeply concave upward having its most ventrad extension under the point be- tween Ml and M2. In contrast, the most ventrad point on the scar in 0. palustris lies at or near the apex of the V formed by. 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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