1668.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 401 



the frontal and prefrontal plates are more than usually wide, as com- 

 pared with their length. In one specimen there are eight superior labials 

 on one side, but this is probably an abnormality. Its twenty one rows 

 of scales separate it from the typical Eutccnia radix, the species to 

 which it has closest affinity, to say nothing of various peculiarities of 

 coloration. It is nearest the subspecies haydeni of the E. radix, but 

 differs from it in the interrupted lateral ventral black baud and the 

 black labial borders. It also approximates the E. flavilabrls, but 

 differs in a way opposite from tbe E. butleri. The dark colors predomi- 

 nate in the present species, and the lateral stripe of the gastrosteges is 

 also peculiar to it. In the E. flavilabris there is also a large postoral 

 yellow black -edged crescent, as in E. mareiana, of which no trace appears 

 in E. r. melanoUenia. Two specimens, Xos. 90 and 312. 

 7. Eutaenia saurita L. Two specimens, No. 318. 



EXPLANATION OF PLATE XXXVI. 



Fig. 1. Lysoptychus lateralis Cope, type: from San Diego, Tex., x, 2. Fig. e, ecutel- 

 lation from dorsal to ventral regions : Figs. / and g, anterior and posterior 

 feet, from below. Page 397. 



Fig. 2. Charina braclyops Cope, type; from Point Reyes, Cal., x, 2. Page 88. 



Fig. 3. Coluber rosaeeus, Cope, type; from Key West. Fla.; j. Page 388. 



Fig. 4. Natrix comjpressicauda bivittata Cope, type; Georgiana, Fla.; }. Page 392. 



Proc. N". M. 88 26 



^^T&H. 



