_Form._--Similar to the preceding species, but snout more pointed, the
raised canthi rostrales meeting at an acute angle. Eye usually as large
as in _V. berus_, nearly as large as the nasal shield; its horizontal
diameter equal to its distance from the posterior or anterior border of
the nostril, its vertical diameter equal to or a little less than its
distance from the mouth. Length of tail seven and a half to nine times
in total length in males, eight to ten times in females.
_Head-Shields._--Rostral as deep as broad or a little deeper than broad,
just visible from above, and in contact with a single apical shield.
Distinct frontal and (usually) parietal shields, the former once and
two-thirds to twice and one-third as long as broad, as long as or longer
than its distance from the end of the snout, usually longer than the
parietals; the latter always in contact with the former, unless broken
up into small shields. Two to six, usually three or four, small shields
on the snout between the canthals, of which there are two on each side,
the second broadly in contact with the supraocular. Supraocular well
developed, extending posteriorly beyond the vertical of the eye,
separated from the frontal by one to four shields. Nine to eleven,
usually ten, scales round the eye, the upper preocular usually in
contact with the nasal; either a single series of scales between the eye
and the labials, or two series except under the centre of the eye, which
is separated from the fourth labial by a single scale. Nasal single.
Temporal scales all smooth, or the upper faintly keeled. Upper labials,
eight or nine, fourth or fourth and fifth below the eye. Four (rarely
five) lower labials in contact with the chin-shields, of which there is
but one pair.
[Illustration: FIG. 34 (From Proceedings of the Zoological Society,
1893)]
_Scales_ in twenty-one (very rarely nineteen) rows, with two apical
pits, strongly keeled, outer row smooth or feebly keeled. Ventral
shields 130 to 148 in males, 130 to 150 in females; anal entire;
subcaudals 31 to 37 in males, 24 to 30 in females.
_Coloration._--As in _V. ursinii_, the sexes are alike in coloration.
European specimens (Plate XII.) are very similar to _V. ursinii_, except
that the labial shields are markedly dark-edged and speckled or spotted
with brown or black. The dorsal band or series of spots is dark brown,
edged with blackish; the ground colour of the middle of the back and of
the scales of the two outer rows on each side is yellowish, of the sides
(four rows of scales) greyish-brown with two or three series of dark
brown spots; two dark [V]-shaped markings on the head; a dark postocular
streak, extending or not to the side of the neck. The lower parts are
whitish or pale greyish, with blackish dots, of which there is a series
of larger ones along each side of the belly. The tip of the tail is
never yellow.
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Elsewhere in the archive
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account