494 yiPERiD^. 



Coluber intumescens, Bonnd. Zool. Beytr. iii. p. '209 (1798). 

 Vipera aevera, part., Latr. JRept. iii. p. 335, pi. — . fig. 1 (1802) ; 



Baud. JRept. vi. p. 115 (1803). 

 (Echidna) arietans, Mei-r. Tent. p. 152 (1820), and Beitr. iii. 



p. 121 (1821). 

 inflata, Burchell, Trav. 8. Afr. i. p. 409 (1822) ; Smith, Edinb. 



N. Pkihs. Journ. i. 1826, p. 250. 

 Echidna arietans, Wagl. Icon. Amph. pi. xi. (1828) ; Bum. 8f Bibr. 



vii. p. 1425, pi. IxxixJ. fig. 1 (1854). 

 Vipera brach.vura, Cuv. JR. A. 2nd ed. ii. p. 90 (1829). 

 arietans, Schleg. Phys. Serp. ii. p. 577, pl. xxi. figs. 1-3 (1887) ; 



Strauch, Syn. Viper, p. 93 (1869) ; Jan, Icon. Ghi. 45, pl. vi. 



figs. 8 & 4 (1874); Boettg. Abh. Senck. Ges. ix. 1874, p. 163, and 



Ber. Senck. Oes. 1888, p. 89 ; Boideng. Tr. Zool. Soc. xiii. 1891, 



p. 148; Boettg. Zool. Ana. 1893, p. 130; Bocage, JSerp. Angola, 



p. 149 (1895). 

 Clotho arietans. Gray, Zool. Miscell. p. 69 (1842), and Cat. p. 25 



(1849). 



lateristriga. Gray, II. cc. pp. 69 & 26. 



Bitis arietans, Gunth. Cat. p. 268 (1858) ; Peters, JReise n. ]\fossamb. 



iii. p. 145 (1882). 

 Echidna clotho, Steind. Novara, Kept. p. 88 (1867). 



Nostrils OH the upper surface of the snout. Eostral small, twice 

 to twice and a half as broad as deep; head covered with small 

 imbricate scales, 8 to 11 across the vertex, from eye to eye; 12 to 

 16 scales round the eye ; three or four series of scales between the 

 eye and the labials ; two (rarely three) series of scales between the 

 supranasals ; one or two series of scales between the nasal and the 

 rostral ; 12-16 upper labials ; 3-5 lower labials in contact with 

 the chin-shields. Scales in 29-41 rows, strongly keeled, outer row 

 smooth or feebly keeled. Ventrals 131-145 ; anal entire ; sub- 

 caudals 16-34. Yellowish, pale brown, or orange above, marked 

 with regular chevron-shaped dark brown or black bars pointing 

 backwards, or black with yellow or orange markings ; a large dark 

 blotch covering the crown, separated from a smaller interorbital 

 blotch by a transverse yellow line ; an oblique dark band below and 

 another behind the eye ; yellowish white beneath, uniform or with 

 small dark spots. 



Total length 1 350 millim. ; tail 160. 



Africa, from Southern Morocco, Kordofan, and Somaliland to the 

 Cape of Good Hope ; Southern Arabia. 



a. Yg. (So. 82; V. 136; Hadramaut,S. Arabia. Dr. J. Anderson [P.]. 



C. 18). 



h. Ad., skin. Somaliland. LordWolvevtonrP.l. 



c. Yg. (Sc. 35; V. 140; Senegal. 

 0. 21). 



d. Ad., stuffed. Gambia. (Type of C. lateri- 



striga.) 



e. Yg. (Sc. 31 ; V. 140 ; Kilimanjaro. F. J. Jackson, Esq. 

 C. 28). [P.]. 



/. Yg. (Sc. 35 ; V. 133 ; Zanzibar. Sir J. Kiik [0.1 



C. 20). 

 g. Ad., skin. Uzaramo. Capt. Speke [P.]. 



