280 Reptiles and Batvaddans from the Congo Free State. 



with the prffiocular ; one postocular ; no anterior temporal ; 

 seven upper labials, third and fourtii entering the eye, fifth 

 and sixth largest and in contact with the parietal ; first lower 



labial in contact with its fellow behind the syraphysial ; ante- 

 rior chin-shields larger than the posterior and in contact with 

 four lower labials. Scales in 15 rows. Ventrals 163; anal 

 entire ; subcaudals 38. Dark brown above, with a yellow 

 nuchal collar; orange beneath, with a few brown dots scat- 

 tered on the posterior part of the belly ; subcaudals dark 

 brown, with orange posterior border. 



Total length 390 millim. ; tail 55. 



A single fenaale specimen from Zongo, Ubangi Rapids. 



36. Elapechis Ouentheri^ Bocage. — Kuango. 



37. Naia melanoleuca, Hallow. — Zongo. 



38. Naia ni'grt'colh's, Reinh. — Stanley Pool ; Kuango. 



39. Dendraspis Jamesonii, Traill. — Zambi-Banana ; Boma. 



40. Dendraspis angusticeps^ Smith. — Boma. 



41. Causus rhomheatus, Licht. — Zambi-Banana; Zambi ; 



Boma ; Stanley Pool ; Kuango ; Kassai ; Zongo. 



42. Bitis arietanSj Merr. — Leopoldville. 



43. Atheris squamiger^ Hallow. — Stanley Pool ; Zongo. 

 Two specimens, with 7 or 8 keeled scales across the inter- 

 ocular region. 'J'lie specimen from Stanley Pool is uniform 

 bright yellow, with a single series of scales between the eye 

 and the labials, 21 scries of scales, 143 ventrals, and 52 sub- 

 caudals ; that from Zongo is dark green, with small yt-llow 

 spots ; one series of suboculars on the right side, two series 

 (one of which is incomj)lete) on the left side ; 23 series of 

 scales, 163 ventrals, and 50 subcaudals. 



44. Atractaspis irregularis , Reinh. — Zambi. 

 Sc. 27; V. 229; C. 25 pairs. 



