330 Dr. A. Giinther on the 



Boodon seychellensis, sp. n. (PL XVIII. fig. C.) 



Scales in 23 rows. Head short and depressed ; snout 

 broad and truncated ; eye small. One prseocular, which 

 does not reach to the upper surface of the head ; two post- 

 oculars. Loreal small, rather longer than deep. Upper 

 labials eight, but the third is sometimes split into two ; the 

 fourth and fifth and sometimes the third enter the orbit ; all 

 the upper labials are high. Temporals 1+2 + 3. Two 

 pairs of chin-shields, the posterior pair about two thirds the 

 size of the anterior. Ventral scutes 195 to 210. Upper 

 parts brownish grey, with a more or less indistinct dark line 

 running along the median line of the back and along the 

 middle of the side of the body. Head with the two bands on 

 each side very distinct and edged with black ; the lower is 

 broken up into spots, the upper and lower lips being largely 

 marbled with dark and light brown. An oblique light band 

 runs from the eye to the angle of tlie mouth. Lower parts 

 brown, each scute with a lighter posterior edge. 



I have seen three specimens of this species. They were 

 brought by Dr. Perceval Wright from the Seychelles. The 

 largest is 36 inches long, the tail measuring b\. It had 

 swallowed a young chicken. 



Boodon hiproiocularis, sp. n. (PI. XVIII. fig. B.) 



Scales in 23 rows. Head and snout rather broad and de- 

 pressed ; eye small. Two prse- and two postoculars ; the 

 upper prseocular reaches to or nearly to the vertical. Upper 

 labials low, eight in number, the fourth and fifth entering the 

 orbit. Two pairs of chin-shields, the posterior pair about 

 half the size of the anterior. Loreal not much longer than 

 deep. Ventral scutes 192. Upper parts uniform brown, 

 lower whitish. The old example shows indistinct traces of 

 the light labial band, but the supraocular band has entirely 

 disappeared. In the young specimen both bands are con- 

 spicuous, narrow, the upper confluent on the praafrontals. 



Of this species I have examined two specimens — one from 

 Lake Tanganyika, 23 inches long, the tail measuring 6 

 inches ; the second specimen is young and comes from Rabai 

 Hills, Mombas. 



Boodon poensts, sp. n. 



Scales in 25 rows. Head scarcely depressed, of moderate 

 width J eye rather small ; one prgeocular, which extends to 



