428 sciNCiD^. 



7. Acontias pluin"beiis. 



Acontias plumbeus, Bianconi, Spec. Zool. Mossamb., Rept. p. 35, 



pi. iii. ; Peters, liaise n. Mossamh. iii. p. 81, pi. xii. 

 niger, Peters, Man. Berl. Ac. 1854, p. 619. 



Distinguished from the preceding by the larger size of the first 

 supraocular, which considerably exceeds that of the two others to- 

 gether, the very large size of the body, and the uniform black 

 coloration. 



From snout to vent 400 millim., tail GO. 



Mozambique. 



a. Ad. Mozambique. Prof. Bianconi [P.]. 



(One of the types.) 



8. Acontias lineatus- 

 Acontias lineatus, Peters, Man. Berl. Ac. 1879, p. 774, pi. — . fig. 2. 



Snout subcuneiform, much depressed, its extremity strongly pro- 

 jecting beyond the labial margin, flat interiorly ; ear hidden ; rostral 

 enormous, covering the greater part of the snout ; mental not reach- 

 ing posteriorly beyond the rostral ; frontonasal and frontal sub- 

 equal in size, together shorter than the rostral ; two supraoculars ; 

 three supraciliaries, first very large ; interparietal much narrower 

 than the frontal, as broad as the parietal, as long as the frontal, 

 nearly as broad as long ; none of the labials entering tlie eye, which 

 is minute. 14 scales round the middle of the body, those of the 

 two vertebral series slightly broader than the others. No limbs. A 

 single, very large prseanal plate. Whitish, with black lines follow- 

 ing the longitudinal scries of scales. 



From snout to vent 150 millim., tail 33. 



South Africa. 



a. Ad. Karroo. Trustees of the S. African 



Museum [P.]. 



9. Acontias grajri. 

 Typhline cuvierii, part.. Gray, Cat. p, 128. 



Very closely allied to the preceding, from which it differs in the 

 following points : — Frontal longer than prsefrontal and than inter- 

 parietal, which latter shield is a little broader than long. Pale 

 brown, with a purplish band across the hinder part of each dorsal 

 scale. 



From snout to vent 120 millim. 



Cape of Good Hope. 



a. Not good state. Cape. 



