442 



THE SNAKES OF SOUTH AFRICA. 



diameter of body 25 to 30 



r. fornasinii. 



T. jnossambicus. 



T. anchietcB, 



T. bibronii. 



T. delalandii. 



T. mucruso. 



T. dinga. 

 T. schlegelii. 

 T. schinzi. 



Praeocular a little narrower than the ocular, in contact 

 with the second labial only ; diameter of body 23 

 to 30 times in total length 



II. Snout with obtusely angular, not trenchant, hori- 



zontal edge. 

 24 scales round the body ; praeocular in contact with the 



second and third labials ; diameter of body 30 times 



in total length . . 

 30 or 32 scales round the body ; praeocular in contact 



with the second labial only ; diameter of body 24 



times in total length ; eye not distinguishable 

 30 to 34 scales round the body ; praeocular in contact 



with the second labial (rarely second and third) ; 



diameter of body 28 to 36 times in total length ; eye 



distinct . . 



III. Snout with sharp, trenchant, horizontal edge. 



A. Snout not hooked (in profile). 

 28 to 30 scales round body ; diameter of body 35 to 50 



times in total length . . 

 30 to 38 scales round body ; diameter of body 25 to 35 



times in total length . . 

 34 to 40 scales round body ; diameter of body 42 to 46 



times in total length . 

 40 to 44 scales round body 



times in total length . . 



B. Snout hooked ; 24 or 26 scales round body ; 



diameter of body 45 to 57 times in total length 



1. Typhlops verticalis. 



Onychocephalus verticalis, Smith, 111., Rept. pi. liv. 

 Typhlops verticalis, Bouleng., t.c, p. 32. 

 Interior of South Africa. 

 Malmesbury (H. Gird). 



2. Typhlops fornasinii, Bianconi, Spec. Zool. Mosamb. p. 13, pi. iii. 



fig. I ; Bouleng., t.c, p. 38. 

 Portuguese East Africa. 

 Delagoa Bay (De Coster). 



3. Typhlops mossambicus. 



Onychocephalus mossambicus, Peters, Mon. Berl. Ac, 1854, p. 621. 

 Typhlops mossambicus, Bouleng., t.c, p. 41. 

 Portuguese]East Africa, Zululand. 



4. Typhlops anchiet^, Bocage, Jorn. Sc. Lisb. xi. 1886, p. 172; 



Bouleng., t.c, p. 40. 

 Angola, Transvaal. 



5. Typhlops bibronii. 

 Onychocephalus bibronii, Smith, 111., 



.5-8. 

 Typhlops bibronii, Bouleng., t.c, p. 

 Cape Colony, Basutoland, Natal. 

 Cape Colony : Malmesbury (Gird) ; 



St. Johns (Shortridge) ; Matatiele, 



Little Namaqualand (Peringuey). 

 Basutoland : Morija (Dyke). 

 Transvaal: Lydenburg (Kilgour). 



6. Typhlops delalandii, Schleg. Abbild. p. 38, pi. xxxii. figs. 17-20; 



Bouleng., t.c, p. 45. 



Rept. pi. h. fie 



44. 



and liv. figs. 



Bathurst District (Becker) ; Port 

 East Griqualand (Tyrrel) ; 



