INNOCUOUS SERPENTS. 147 



scales. S. 195+103. Above a deep gi'cen, beloAv, 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 brow^iish 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 lievis, from which it only differs in its 

 scales being feebly carinated : country, Tartary ; twenty- 

 five rows of scales. PI. 195 -|- 75. 



25. Coluber guttatus. From North America ; of a 

 more vigorous form than our Coronella lasvis ; it has also 

 a smaller head, and a shorter tail. The abdomen is a 

 little angular. PI. 210 4- 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 

 Fsammophis Moniliger bears the name of Coluber Trabalis Pall. 



