. Bulletin - United States National Museum. Science. 144 HULLETIN 34, UNITP]D STATES NATIONAL MUSEUM. degrees. Thej^ are separated from each other on the median line by a short interspace and from the parasphenoids by a little longer one. This form is quite different from that characteristic of the P. glutinosus. There the series pass behind the choana^, sometimes even beyond their external border, and from two arched series, not directed backwards in any such degree as seen in the P. amens. The- parasphenoid i^atches are close together, but a notch anteriorly and posteriorly indicates the ext
. Bulletin - United States National Museum. Science. 144 HULLETIN 34, UNITP]D STATES NATIONAL MUSEUM. degrees. Thej^ are separated from each other on the median line by a short interspace and from the parasphenoids by a little longer one. This form is quite different from that characteristic of the P. glutinosus. There the series pass behind the choana^, sometimes even beyond their external border, and from two arched series, not directed backwards in any such degree as seen in the P. amens. The- parasphenoid i^atches are close together, but a notch anteriorly and posteriorly indicates the extremities of the line of separation. The internal digits on both feet are rudimental and terminate in a single small i^halange, which does not extend beyond the extremity of the second metapodial bone, and is connected with the latter directly by the integument. The terminal phalanges of the other toes are trun- cate and slightly expanded at the tips, as in the P. glutinosus. There are thirteen lateral dermal folds and a gular fold. The skin is smooth everywhere. Measurements. M. Total length - 118 Leugth of head and body 0525 Length to groin 047 . Length to axilla 0185 Length to rictus oris 007 Length of fore-leg from axilhx . 0158 Length of cubitus 0053 Leugth of fore-foot ,:.j 006 Length of hind leg 0175 Length of tibia 0052 Length of hind foot 0085 Width of head 0083 Width between eyes .0036 4>. t 3 5 . Fig. 32. Plethodon ceneus Cope. S. Tennessee; \. The coloration is peculiar. Instead of the black color, with or with- out pale bluish dots, of the P. glutmosus, the sides and back are thickly spotted with largo yellowish-green blotches of irregular form, produc- ing an effect something like the coloration of the Mexican Spelerpes Icp- rosus. The dorsal spots are much larger than the lateral, and are often confluent. On the head they almost exclude the ground color. The spots on the sides are quite small, as are those on the feet. The lower sides of the tail and belly are
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