. Bulletin - United States National Museum. Science. 110 BULLETIN 34, UNITED STATES NATIONAL MUSEUM. round tbeir inuer margins to a point just in advance of their anterior, then turn abruptly inwards and slightly backwards, making a right angle with their previous course. They converge, but do not unite. Tongue large; as broad as long. Gular fold well marked; parotoid groove not visible, perhaps accidentally. It is difficult, as in the G. tene- hrosus, to distinguish the costal folds. There are not more than twelve. The tail is short and stout; its ujiper edge is much compressed, as is the pos
. Bulletin - United States National Museum. Science. 110 BULLETIN 34, UNITED STATES NATIONAL MUSEUM. round tbeir inuer margins to a point just in advance of their anterior, then turn abruptly inwards and slightly backwards, making a right angle with their previous course. They converge, but do not unite. Tongue large; as broad as long. Gular fold well marked; parotoid groove not visible, perhaps accidentally. It is difficult, as in the G. tene- hrosus, to distinguish the costal folds. There are not more than twelve. The tail is short and stout; its ujiper edge is much compressed, as is the posterior half; its glandular structures are much less developed than in other species of Amblystoma, the crypts of the crest being minute and globular. Length of tail equal from its origin (posterior margin vent) to posterior outline of sternum. The extremities are very stout, just meeting when laid along the side. The palms and soles are very wide, and the toes short and flattened. Thej stand, as regards length, behind, 3, 4, 2, 5, 1; before, 3, 2, 4, Fig. 23. Chondrotus aterrimus, No. 5242; natural size; Kocky Mountains. The color is black above, lead colored below. Measurements. In. Lin. Length from snout to gape (flat ijrojection) 0 Length from snout to gular fokl 0 12. 75 Length from snout to axilla 0 Length from snout to groin 0 39 Length from snout to end of vent 0 48 Length from snout to end of tail 6 6 Width of head ." 0 Width of tongue 0 Width hetween eyes anteriorly 0 5 Width hetween nostrils 0 4 Width hetween inner nostrils 0 3 Width from eye to nostril 0 Circumference of helly 0 23. 6 Greatest height of tail 0 5. 4 Greatest width of tail 0 Free portion of longest finger 0 From elhow to tip of finger 0 9. 75 Free part of longest toe 0 3 Knee to tip of longest toe , 0 11 Extent of Outstretched toes 0 6. 6 No. 5242; one specimen; North Tiocky Mountains; Lieutenant Please note that these images are extracted from scanned p
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