256 COLTTBElDiE. 



longest. Head small, not distinct from neck ; eye small, with 

 round pupil ; nasal entire or divided ; no loreal. Body cylindrical ; 

 scales smooth, without pits, in 15 rows ; ventrals rounded. Tail 

 moderate or short ; subcaudals single. 

 Tropical and South Africa. 



Synopsis of the Species. 



I. Two praetrontals. 



A. Symphysial not in. contact with the chin-shields. 



1. Two postoculars, in contact with a temporal ; nasal entire, 



in contact with the praeocular. 



Third and fourth upper labials entering 



the eye 1. jachsonii, p. 257. 



Second and third upper labials 



entering the eye 2. werneri, p. 257. 



2. A single postocular ; one labial in contact with the parietal. 



jS'asal entire, not in contact with the 



praeocular 3. concolor, p. 257. 



Nasal divided, in contact with the 



prseocular 4. lunulatxis, p. 258. 



B. Symphysial in contact with the chin-shields. 



1. Third and fourth upper labials entering the eye. 



Nasal divided ; ventrals 154-180 ; 



subcaudals 51-59 5. gueniheri, p. 259. 



Nasal entire ; ventrals 191 ; sub- 

 caudals 44 6. hocagii, p. 259. 



Nasal entire ; ventrals 138-166 ; 



subcaudals 37-53 7. capensis, p. 259. 



2. Second and third upper labials entering the eye. 



Ventrals 110-149 ; subcaudals 21-40. 8. nigriceps, p. 260. 

 Ventrals 160-161 ; subcaudals 36-41. 9. punctatolineatus, p. 261. 



II. A single prasfrontal. 



Frontal as long as its distance from 



the end of the snout 10. lineatus, p. 261. 



Frontal longer than its distance from 



the end of the snout 11. anomalus, p. 262. 



1. Aparallactus jacksouii. 



Uriechis jacksouii, Gunth. Ann. 8f Mag. N. H. (6; i. 1888, p. 326, 



pi. xix. fig. E. 

 Aparallactus jacksonii, Bimleng. Ann. 8f Mag, N. H. (6) xvi. 1895, 



p. 172. 



