1881.] 
FROM ECU A DO it. 
keels of the tail nre stronger below thm above, and tlie coloration 
ts quite dtlTerent. 
8. Eci'LEOl'lfS (EuSPONDYLUg) GUENTHeRl, Sp. U. (Plate 
XXIIL fig. !). 
Forai slender and elongate. Head rather narrow, not constricted 
at the nape, niiuzle ratber long, Internfiaal plate large, longer than 
broad, rounded in front, followed by two large, irregidar, four-sided 
fronto-nasala extensively in contact on their inner or smaller side ; 
frontal, two fronto-parietalsi, fliid large moderately broad and long 
interpHrietal, two wedge-shaped parietals ; two ocei])ital8 behind the 
interparietal, smaller outer occipitals and paroeeipitals above the 
temporal region, the shields of which are polygonal and large. 
Nasal large, triangular, with the nostril in the middle; frenal also 
large, obliquely cut off posteriorly by the first and largest of a series 
of ratber large infraoculars. Supraorbitals four. Supralabials six, 
not elongate; infralabials five, the first unusually smaller and wedge- 
shaped. Sympby.sial very large ; single mental followed by two pairs 
of large contiguous postinentals i a third with their points almost 
meeting, and a wide concavity behind occupied by the ^nlar scales, 
of which there are three rrjws before the minute gular cnllaret, and 
seven between this and the last gidar series of eight narrow and long 
shields which form the collar. All tliese series are continuous wit!) 
those of the nape, forming complete rings of smooth quadrangular 
plates, there being no granular space on the neck, and only a limited 
space covered witb small or minnte, but not granular, scales at the 
shouhler and fore part of the side. Uack with cross rows of elongate 
qnadrangnlar smooth shields, about fourteen or fifteen in each row. 
Small or minute lateral shields of the same type run up between the 
dorsal rows. Thirty-four transverse dorsal rows from the occiput to 
the root of the tail* Ventral shields elongate, quadrangular, smooth, 
in ten longitudinal series (counting the smallest external ones in the 
middle of the body), in twenty-one transverse rows from the collar to 
the anal region. Prceanal fdates two large anterior, five long posterior 
ones. Tail with the dorsal and ventral scutellation. Limbs covered 
almost entirely with Iwrge smooth plates, leaving otdy a very Umited 
space occupied by smalt scales on the posterior surfaces. Fetnoral 
]>ores eight. Fore litnb reaching to front of eye ; third and fourth 
toes equal. Hind limb reaching three fourths of the length of the 
m\e : fourth toe the longest. The inner toes are well developed on 
both fore and hind feet. 
Ground-colour of the entire dorsal surface uniform pale brown, 
witb dark bars and spots disposed as follows : — Each of the shields 
on the upper surface of the bead has one or more round blackish 
spots ; eight broad transverse bars on the hack between bead and 
root of tail ; the bars are continued at etjual intervals on the tail, 
diminishing to mere spots towards the end. Lower surface of body 
and tail yellowish, also with round hlaekish spots, generally one on 
each plate on the anterior portions (the gular and labial regions in 
particular) being large, variegated with the dark colour, distinct bars 
