INJiTOCUOUS SERPENTS. 
147 
scales. S. 195 + 103. Above a deep green, below, and 
a central spot in the scales, yellow. These tints vary 
much, and often pass into brown, or even into black. This 
species is very wild in its manners. 
21. Coluber Cliffordii. From northern Africa. The 
regions of the temples and frenals are covered with scales ; 
the labial plates are narrow and numerous : scales cari- 
nated and disposed in 23 rows ; tints livid ; above, dull 
yellowish-brown, with three ranges of spots a little darker, 
and often confluent. S. 236 + 84. Less strong than the 
last. 
22. Coluber Hippocrepis. Intermediate between the 
two last. Size and form of the Coluber viridiflavus, but 
the head is larger, and the tail less extended. The eye 
is surrounded posteriorly, and below with about six small 
plates ; scales in twenty-five rows. S. 232 + 91. Colour 
reddish-yellow, very bright ; the upper parts are relieved 
by three rows of large dark spots, orbicular on the back, 
square and smaller on the sides ; the marks which orna- 
ment the top of the head, have sometimes the form of a 
horse-shoe. Inhabits most of the countries bordering 
on the Mediterranean. 
23. Coluber florulentus, has a shape more deli- 
cate than the last. Colour a yellowish or brownish grey, 
varied with a great number of spots and bands very ob- 
solete. Chin and temples garnished with numerous little 
plates or scales ; nineteen rows of long scales. S. 214 + 93. 
Country, Egypt. 
24. Coluber Trabalis.* A little more strong than 
our Coronella lac vis, from which it only diflers in its 
scales being feebly carinated : country, Tartary ; twenty- 
five rows of scales. PI. 195 -f 75. 
25. Coluber guttatus. From North America ; of a 
more vigorous form than our Coronella Ifcvis ; it has also 
a smaller head, and a shorter tail. The abdomen is a 
little angular. PI. 210 + 56. Twenty-five rows of smooth 
scales. Above of reddish-grey, speckled with black, and 
It is the Coluber Dione Pall, of the Berlin Museum, where our 
Psammophis Moniliger bears the name of Coluber Trabalis Pall. 
