1052 



REPORT OF NATIONAL MUSEUM, 1898. 



relating to the arched light bar above it, as pupil to eyebrow. The 

 superior lateral spots in like mauner invade the median dorsal band, 

 either cutting it off entirely or giving it a laterally undulatory course. 

 Its width is alternately one and one and a half rows of scales. A dark- 

 gray shade connects the lateral 

 inferior spots. Inferior surfaces 

 olive-lead colored; the gastros- 

 teges with blackish bases at the 

 extremities. A large black spot 

 behind the occipital plates, extend- 

 ing to below the angles of the 

 mouth, which is deeply notched 

 behind by the dorsal band. No 

 occipital spots. Labial plates yel- 

 low, all eiiually black-edged. No 

 yellow crescents on the side of the 

 head or neck. 

 Metisurements. — Total length, 000 mm.; length of rictus oris, 20 mm.; 

 of tail, 135 mm. Lengths of tail. Cat. No. 10528 (2), four and two thirds, 

 four and one-sixth; Cat. No. 10201, four; Cat. No. 8746, four and one- 

 sixth ; two collections E. D. Cope, from Helotes, Texas, four and one-half, 

 four and three-fifths. Scuta, 167-1-72. 



Eutcenia eques collaris Jan. 



Fig. 29-J. 



EUT.ENIA ECJUES COLLAKIS Jan 

 =r: 1. 



Helotes, Texas. 



Cat. No. 10528. U.S.N.M. 



KUTJENIA EQUES AURATA Cope. 

 EuUrnia auraia Cope, Proc. U. S. Nat. Mus., XIV, 1891. p. 0.")9. 



Form (»f medium robustness; head well distinguished; tail four and 

 two-tifths times in total length. Scales in nineteen series, those of the 

 inferior row as deep as long, smooth, or feebly keeled; the transverse 

 diameter of the scales diminishing gradually and nowhere so small as 

 in E. e. eqiies and species of the U. saurita series. Superior labials 

 eight, all dee[)er than long. Loreal deeper than long; oculars, 1-3. 

 Temporals, 1-2-3. Frontal wider than superciliaries, not reaching pre- 

 ocular; parietals rather short and wide. Scuta, 108-1-74. 



Brown, without spots, and with three longitudinal yellow stripes, the 

 lateral distinct, and running on the second and third rows of scales. 

 lielly yellow, immaculate. Labials yellow, all with a black posterior 

 border except tlie last; the penultimate with the yellow reduced to an 

 oval spot on the anterior inferior portion. A large black nuchal spot 

 on eacli side of the narrow median yellow stripe. 



The brown of the body is uniform, and the three longitudinal stripes 



