AFRICAN SNAKES. 211 



3. DIPSADOMORPHUS. 



Fitzing. in Tschudi, Faun. Per., Herp. p. 55 ; Bouleng. Cat. 

 Sn. iii. p. 59. 



Two species : — 



Scales in 19 rows; ventrals 236-276; anal entire; subcaudals 



96-132 D. pulverulenttis. 



Scales in 21-25 vows ; ventrals 240-289 ; anal divided ; sub- 

 caudals 122-117 D - blandingii. 



1. DIPSADOMORPHUS PULVERULENTUS. 



- Dipsas pulverulenta Fisch. Abh. Nat. Yer. Hamb. iii. 1856, 

 p. 81, pi. iii. fig. 1 ; Bocage, Herp. Ang. p. 123. 



Dipsadomorphus pulverulentus Bouleng. t. c. p. 68. 



West Africa, from the Coast of Guinea to the Congo. 



2. Dipsadomorphus blandingii. 



Dipsas blandingii Hallow. Proc. Ac. Philacl. 1844, p. 170; 

 Bocage, Herp. Ang. p. 124. 



Dipsadomorphus blandingii Bouleng. t. c. p. 77. 



West Africa, from Senegambia to the Congo, eastwards to 

 British East Africa. 



4. DlPSADOBOA. 



Giinth. Cat. Col. Sn. p. 182 ; Bouleng. Cat. Sn. iii. p. 81. 



1. Dipsadoboa unicolor, Giinth. op. cit. p. 183 ; Bouleng. 1. c. 

 Congo and West Africa as far north as Sierra Leone. 



5. Amplorhinus. 



A. Smith, 111. Zool. S. Afr., Kept. ; Bouleng. Cat. Sn. iii. 

 p. 124. 



1. Amplorhinus nototcenia. 



Coronella nototcenia Giinth. P. Z. S. 1864, p. 309, pi. xxvi. 

 fig. 1. 



Amplorhinus nototcenia Bouleng. t. c. p. 125. 

 Psammophylax nototcenia Bocage, Herp. Ang. p. 109. 

 Egyptian Soudan to Nyassaland, Angola. 



6. Trimerorhinus. 



A. Smith, 111. Zool. S. Afr., Bept. ; Bouleng. Cat. Sn. iii. 

 p. 138. 



1. Trimerorhinus rhombeatus. 



Coluber rhombeatus Linn. Mus. Ad. Frid. p. 27, pi. xxiv. fig. 2. 

 Trimerorhinus rhombeatus Bouleng. 1. c. ; Bocage, Herp. Ang. 

 p. 108. 



