240 BULLETIN 17 7, UNITED STATES NATIONAL MUSEUM 



A pronounced crest beginning on the occiput, equally developed on 

 the back and on the proximal part of the tail; the other caudal scales 

 mucronate, keeled above, faintly keeled below; no verticils. The 

 keels of the lateral and dorsal scales are directed upwards and back- 

 wards so that the scale rows converge strongly on the back. Tail 

 (stump) slightly compressed. A pair of enlarged post-anals in the 

 male. Size rather small. 



"Dimensions. — Snout to vent, 55 mm.; head to posterior ear, 15 

 mm.; tail incomplete; foreleg, 22 mm.; hindleg, 41 mm.; width of 

 head, 12 mm. 



"Coloration in alcohol. — Body color pea green above, with a promi- 

 nent dorso-lateral light stripe beginning on the upper temporal region 

 and continuing to the end of the body where it gradually fades out; 

 the dorsal scales between these light stripes mottled with sage green, 

 with traces of black pale-edged crossbands appearing on neck and 

 above shoulders; a pale olive-buff lateral stripe beginning on the 

 loreal region, continuing beneath the eye and through the ear, and 

 gradually fading out in the groin; the area between the lateral and 

 dorso-lateral light stripes sepia, with many of the scales tipped with 

 cadmium orange or turquoise blue ; four or five irregular black spots in 

 the anterior part of this sepia strip, the foremost covering the scales 

 over the ear, the last one above the shoulder, followed by a small black 

 axillary spot; top of head pale drab, immaculate, except for a pair of 

 sepia spots on the outer parietals; labials pale olive buff clouded with 

 drab, with a few sepia spots near the commissure of the lips and on 

 the sutures of the lower labials; mental and rostral shields drab; 

 ventral surfaces pale blue, deepening in color on the belly ; throat with 

 numerous scattered black crescentic spots, each extending over one 

 or two scales; region about groin and under surface of tail heavily 

 spotted with cadmium orange, with this same color appearing in some 

 of the lateral scales together with turquoise blue ; upper part of limbs 

 sage green suffused with gray mottlings, the forearms with black spots 

 on the elbows; the crest of the tail sage green mottled with turquoise 

 blue, the other caudal scales suffused with dull orange. 



"Paratypes. — There are four paratypes, including two young, taken 

 at the same time and place as the type (M.C.Z. 37552-4, and U.S.N.M. 

 95117)." 



Relationships — This subspecies is undoubtedly derived from lunatus, 

 as the peculiar pattern on the throat and sides of neck testifies. But 

 the spotting on the throat is not so heavy in louisae, nor are the spots 

 on the side of the neck so regular in shape. The mainland form is 

 larger in size, while the scales appear to be more mucronate. 



