. Bulletin - United States National Museum. Science. 2 1/4 3 5 Fig. 52. Dicmyctylusviridescensviridescens. No. 14163, Aiken, S. C; } f. The outline of the head seen from above is an oval, which contracts anteriorly and posteriorly, and is not distinguished from the neck l>y tlie abrupt contraction of the latter. The back is roof-shaped, anil the section of the body a vertical oval. The length from the axilla to the end of the muzzle is just a little less than the distance between the ax- il'a and the groin. The tail is ranch compressed throughout, and is as long as the head and body (vent i
. Bulletin - United States National Museum. Science. 2 1/4 3 5 Fig. 52. Dicmyctylusviridescensviridescens. No. 14163, Aiken, S. C; } f. The outline of the head seen from above is an oval, which contracts anteriorly and posteriorly, and is not distinguished from the neck l>y tlie abrupt contraction of the latter. The back is roof-shaped, anil the section of the body a vertical oval. The length from the axilla to the end of the muzzle is just a little less than the distance between the ax- il'a and the groin. The tail is ranch compressed throughout, and is as long as the head and body (vent included). The muzzle, viewed from above, is truncate-rounded, and it projects a little beyond the mouth. The two ridges of the top of the head in- close a long lenticular open groove which is closed in front on the muz- zle, bur open behind on the occiput. On their external sides is a shallow groove. There is a distinct but obtuse canthus rostralis, and the lorea' region is slightly concave. The profile is slightly dec rved at the muzzle. The eye is rather large; i's length exceeds a little the length from its anterior canthns to the end of the muzzle, and is a little less than the interorbit 1 width. The nostrils are close together, and look upwards as well as outwards. The distance between them enters the interorbital space two and a half times. The eyes do not project upwards, so that the eyelids are nearly plane with the front. The lower jaw is only partly overlapped by the posterior pait of the upper lip, and there is no distinct lower lip or groove. On the side of the head posterior to the eye is a straight row of four pits, the fir.^t of which is near the eye and the last is in the position of the first branchial fissure. These pits are shortly linear and curved, as though made by the pressnre of an instrument with a short curved edge. The distances between them are equal to each other and to half the diameter of the eye. At the position of the posterior pit are traces o
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