44. BooDOX. 329 



2. Scales in 25 to 31 rows. 



a. Two pairs of chin-shields, in contact with each other. 



I'arietal shields longer than the distance 



hetween the frontal and the end of 



the snout G. Ibieatus. p. 332. 



]*arietal shields as long as the distance 



between the frontal and the end of 



the snout 7. fidhjhiosus, p. 334. 



h. Only one pair of chin-shields meeting on the median line. 



8. meatalls, p. 335. 



II. Subcaudals single 9. olivaccits, p. 335. 



1. Boodon lemniscatus. 



Botedon lemniscatum, Duni. v.y Bibr. vii. p. 36o (1854) ; Jan, Icon. 

 Gen. 36, pi. iii. tig. 1 (lS70j ; Blanf. Geol. <§- Zool. Abyss, p. 4o7 

 (1870). 



Eye small. Rostral broader than deep, scarcely visible from 

 above ; internasals subtriangular, shorter than the prcefrontals ; 

 frontal twice as long as broad, longer than its distance from the end 

 of the snout, as long as the parietals ; lorcal longer than deep; one 

 prseocular, not extending to the upper surface of the head ; two (or 

 three) postoculars ; temporals l-|-2; eight upper labials, third, 

 fourth, and fifth entering the eye ; three or four lower labials in 

 contact with the anterior chin-shields, which are much longer than 

 the posterior. Scales in 21 or 23 rows. Ventrals 194-200 ; anal 

 entire ; subcaudals 41-00. Pale brown above ; a dark vertebral 

 band, extending to the end of the snout and forming a loop on the 

 crown ; a dark lateral band, three or four scales wide on the body, 

 also extending to the end of the snout, passing through the eye ; 

 lower parts yellowish, with brown dots, which may form a streak 

 along each side of the belly, and one along the middle of the tail. 



Total length 800 millim'. ; tail 110. 



Abyssinia. 



a-b. c?(Sc. 21 ; V. 200; C.5.5) Ashangi. W.T. Blanford, Esq. 



&2(Sc. 21: V. 197:C. 41). [P.]. 



c. cJlSc. 21 ; V. 194; C. 60). Abyssinia. W. Jesse, Esq. [C.]. 



2. Boodon geometricns. 



Lycodon geometricns, Schlcf/. I'/n/s. Serp. ii. p. Ill (18.37). 



Eugnathus geonietricus, iJinn. &,• Bibv. vii. p. 406 (18.')4). 



Boa}don geometriciim, Jan, Elcnco, p. 9o (1863), and Icon. Gen. 36, 



pi. iii. tig. 2 (1870); Peters, Reise n. Mossamb. iii. p. 1.34 (1882) ; 



Boulenq. Aim. Mus. Genova (2) xii. 1891, p. 14. 

 Boodon seychellensis, GiiHtA. Ann. S,- May. A. H. (6) i. 1888, p. 330, 



pi. xviii. fig. C. 



Eye rather small. Rostral broader than deep, just visible from 



