MEXICAN HERPETOLOGICAL MISCELLANY—SMITH 353 
dorsal scale rows; posterior portion of throat (males) black, scales 
in median area black-edged with blue centers, scales anteriorly pale 
blue; no yellow or orange on throat; females and young of both 
sexes with parallel, longitudinal, alternating light and dark lines 
on neck, 
- Description of holotype—Dorsal scales 30; scales around body 39; 
femoral pores 14-14; 2 canthals. 
Color.—Dorsal surface of body brilliant green; continuous, parallel, 
longitudinal black lines following the edges of the dorsal scale rows; 
dorsal surface of head black, with a hght spot on each parietal, on 
the interparietal, posterior section of frontal, both prefrontals, 
lateral frontonasals, posterior pair of internasals, and on several of 
the supraoculars and superciliaries; a large, black shoulder patch on 
each side, the two separated from each other by six scale rows; the 
black of shoulder patches continuous around neck; scales on pos- 
terior part of throat edged with black or very dark blue, the centers 
light blue; scales on anterior part of throat and chin pale blue with 
darker edges. Chest, a broad line down middle of abdomen, ventral 
surfaces of limbs and tail and preanal region all slightly bluish; 
sides of abdomen dark blue, and these areas with a narrow, poorly 
defined, black median border. 
Variation—Females lack the brilliant green and blue color of the 
males, but may have light spots on the head. 
In the young the back is more or less uniform gray or slate; on the 
neck is a median longitudinal light line extending from the upper 
edge or slightly above the ear to the upper edge of the black shoulder 
patches; these are bordered medially by a narrow dark line of similar 
extent ; these in turn bordered by a light line, which is separated from 
its mate by a median dark line; another light line extends from the 
posterior portion of the supralabial region through the ear and termi- 
nates abruptly on the middle of the neck; below this is another light 
line from ear to the black shoulder patches. 
Females are marked much like the young, except that the neck 
markings are not quite so distinct; most distinct is the dorsolateral 
light line and its bordering dark line, from upper edge of ear to upper 
edge of the shoulder patch. Some adult females have light marks 
on the head, similar to males. 
Comparisons.—There are no well-marked differences between 
j. formosus and f. scitulus in scutellation. The latter form has a 
lower average dorsal count than the former, but the range of variation 
of the one form overlaps that of the other too extensively to permit 
separation of any population on the basis of this character. Twenty- 
six of 7. settulus show a range from 30 to 34 (30, 4; 31, 7; 32, 4; 34, 4), 
