CROCODILIANS, LIZARDS, AND SNAKES. 



661 



in tlie adult, instead of being at tirst coal black and then olive brown. 

 The under parts are always olive green instead of blue black or bluish 

 in the young, changing to greenish in tbe older ones. The color of the 

 back is rather a reddish than greenish olive in many specimens. The 

 scales are much smaller, there being generally 28 round the body 

 instead of 24. The lateral scales have generally a darker border in 

 old specimens. Sometimes there is a dusky olive spot at the base of 

 each dorsal scale. The upper labials are almost entirely whitish, like 

 the chin. In the collection are ten s])ecimens from Matamoras which 

 agree i)recisely in every respect with the others, except that the body 

 appears more cylindrical and rigid. The color, however, almost uni- 

 form lustrous black above. This color shaded, especially below and on 

 the tail, with very dark olive. I can scarcely believe it to be a distinct 

 species, however, and prefer to consider it as a black variety. The 

 largest is fully equal in size to any of the striped specimens, the head 

 and body measuring U2 mm. 

 This skink is so far known only from Texas. 



Eumeces tetragrammxis Baird. 



Locality. 



From wboiu received. 



Below Salado River Major Emory , 



Matamoras, Mexico Lieutenant Couch 



do do 



Nature of specimen. 



Var. funehro8us. 



Cook County, Texas G. H. Ragsdale. 



Cameron County, Texas C. K. Wortheu . 



EUMECES ANTHRACINUS Baird. 



Eumeces anthraciniis Cope, Check-list N. Amer. Batr. and Kept., 1895, p. 



BouLENGER, Cat. Liz. Brit. Mus., Ill, 1887, p. 376. 

 Phfitiodon anthracintis Baird, .Jonrn. Acad. Nat. Sci. Phila. (2), 1, 1850, p. 294. 



45.— 



Body and head depressed, quadrangular; in section, rather slender; 

 tail cylindrical, attenuated, one and one-half times the head and body. 

 Supranasals, iuternasal, and prefrontal rhomboid; the former smaller 

 and more transverse than the rest. One prefrenal equal to the supra- 

 nasal, half as long as and higher than the pentagonal loral, extending 

 upward to contact with the internasal. Upper labials, six or seven. 

 One large transverse pentagonal mental plate in the end of the chin, 

 behind the extreme tip, instead of the two of U. quinquelineatus. Hind 

 leg ai)plied twice forward reaching about to middle of neck; contained 

 thrice in total length of head and body; hind leg from knee about four 

 times, head alone nearly five times. Fore leg from elbow equal to side 

 of head. Fifth hind toe shorter than second; free portion of longest 

 little more than half the side of head. Scales of body in twenty-four 

 longitudinal series, quite parallel on the sides; forty-seven scales from 

 head to tail. 



Above rather dark olive green, witii two well-detined white lines on 



