424 Dr. A. Giinther on new Sjyecies of Snakes 



on the nasal shield, crossing the eye and temple, and termi- 

 nating near the end of the tail. Lower parts uniform whitish. 

 This snake is probably from South-eastern Africa, and was 

 obtained of Mr. Warwick. It is 20 inches long, the tail being 

 4 inches, and the head 6 lines. 



dorsalis. 



Leptophis dorsalis, Bocage. 



Maxillary dentition " coryphodont," the posterior teeth 

 being but little longer than the preceding. Ventral shields 

 keeled. Upper labials nine, three entering the orbit. Anal 

 bifid; ventral plates 184. Temporal shields 1 -|- 1 + 1 . Skin 

 between the scales black ; each scale with a whitish spot on 

 its outer margin. 



Angola. 



Ahcetulla Kirkii. 



Ventral shields with strong lateral keels. Upper labials 

 nine, two of which enter the orbit ; arrangement of temporal 

 shields rather irregular; anal bifid; ventral shields 171, 173; 

 subcaudals 136-140. 



Scales smooth, in fifteen rows, without apical groove. Lo- 

 real elongate ; pr^ocular in contact with the vertical. Teeth 

 longest behind, in a continuous series. 



Green ; skin between the scales black ; without white spot. 



Three examples have been sent by Dr. Kirk from Zanzibar. 

 The longest is 40 inches long ; tail 15 inches. 



DryopMs argentea (Daud.). 

 We have lately received specimens of this snake in collec- 

 tions made at Pebas and Yuimaguas, together with Rhino- 

 hothryum lentiginosum. 



Tragops fronticincttis (Gtlir.). 



Specimens of this snake have been collected by Mr. Theo- 

 bald in Pegu. 



Tragops javanicus ( Steindachner) . 



This is a very distinct species, occurring also in Pegu, where 

 specimens have been collected by Mr, Theobald. The anal 

 shield is sometimes entire, sometimes divided ; ventrals 189- 

 192-193. Scales in the coccygeal region generally keeled. 

 Prof. Peters (Monatsber. Ak. Wiss. Berl. 1868) has ob- 

 served such keeled scales also in Tragops prasi'nus ; only a 

 few of our numerous examples of that species show slight 

 traces of keels in that region. Troptdococcgx (Gthr.) is based 

 on the difference of the shields of the head (the form of whicli 



