628 REPORT OF NATIONAL MUSEUM, 1898. 



2. Four wliito lines, the upper on either side on adjacent edges of scales and 

 8ei)arated by two rows E. skilioniainifi. 



o. Five white lines, the two lateral along the centers of single rows. Median Hue 



not bifurcating antei'iorly E. Jeptoyram nms. 



B. Upper labials sjiotted with white; not continuously of this color. General color 

 black. 



4. Five very obsolete whitish lines, the upper lateral on adjacent edges of two 

 rows, separated by six rows. A faint continuous line on the side of head 

 above. Tip and sides of chin plain whitish. Spots on labials not closed 

 beueath. Sides of neck scarcely spotted E. ohsoletaa. 



5. No whitish lines whatever. Labials and plates on side of head, beneath, and 

 above all black, with a rounded central spot of white. Two short lines of 

 white spots on each sid ■ of the neck E. (juttulatus. 



The North American species of Eumeces may be distinguished in 



detail as follows : 



Division I. 



Hind legs applied twice forward reaching end of snout. Scales in from S8 to 42 

 rows, in oblique series on the sides; four supraorbitals. Brown, with two 

 white lateral streaks inclosing a brown band; a light line on each side of top 

 of head E. JorKjirostris Cope. 



Hind^egs less than half head and body ; scales in 28 rows, in horizontal lines on the 

 sides; four supraorbitals ; two pairs of uuchals; five longitudinal pale stripes, 

 the dorsal vanishing ; sides black E. callicephalus Bocourt. 



Division II. 



A. Postnasal larger, in full contact with the supranasal. 



Hind leg applied twice forward, reaching the tij) of snout; and contained 

 two and one-third times (head four and one-half times) iu head and body; 

 hind leg from knee not three times. Fifth hind toe longer than second. 

 Head depressed; four and one-half times in head and body. Scales iu young 

 black, with from 28 to 32 rows; five equidistant white lines, the two lateral 

 each on adjacent edges of two rows of scales. A white line behind the thigh. 

 The upper stripes separated by four or six whole rows of scales, ^^'ith age 

 the dorsal stripe first becoming indistinct; the color more olivaceous above. 

 Males with head very broad behind ; reddish. The color of body more or less 

 j^l^la^in olive E. quinquelineatus Liun;L*us. 



Hind legs applied twice forward reach to the ear; contained over two and one- 

 half times iu head and body; from knee, three and one-half times; head, 

 four and one-half times. Fifth hind toe shorter than second; its free portion a 

 little more than half the side of head. Scales in 28 rows. Young black, with 

 two rows of rounded bluish white dots on each side the head and another on 

 each side the chin. With increasing age the color more olivaceous above; 

 the scales each with a dusky margin ; beueath, plain and lighter. 



E. (juttulatus Hallowell. 



Limbs short; hind legs applied twice forward reach to the insertion of the arm 

 anteriorly ; applied thrice, to the nose. Contained three times in head and 

 body; from knee, four and one-third times; head, five times. Fifth hind toe 

 shorter than second, its free portion less than half the head to ear. Scales in 

 28 rows, the laterals smaller and iu oblique series. Adult, light olive above; 

 each scale edged latei'ally, less distinctly behind with darker; beneath, green- 

 ish white. Labials edged laterally with dusky. (Postnasal sometimes want- 

 ing) E. ohsoletus Baird and Girard. 



Hind legs applied twice forward, falling between arm and ear. Contained 

 two and one-half to three times in head and body; head, about five times; 



