^74 Mr. d. A. BOUJiENGER ON THE 



1. Python seb.e. 



C'olaher sebce Guiel. S. N. i. p. 1118. 

 Python, seho' Bouleng. t. c. ]). 86. 

 Tropical and South Africa. 



2. Python uegius. 



Boa 7'egia Shaw, Zool. iii p. 347, pi. xcvi. 



Python regius Bouleng. t. c. p. 88. 



Seuegambia tu Niger, eastwards to the Egyptian Soudan. 



2. Calabaria. 

 Gray, P. Z. S. 1858, p. 154 ; Bonleng. Cat. Sn. i. p. 92. 



1. Calabaria reinhardti. 



Eryx reinhardti Schleg. Bijdr. tot de Dierk. i. p. 2, pi. — ■. 



Calabaria reinhardti Bouleng. 1. c. 



Liberia to Congo, eastwards to the Ituri. 



3. Eryx. 



Daud. Hist. Kept. vii. p. 251 ; Bouleng. Cat. Sn. i. p. 122. 



1. Eryx muelleri. 



(Jowjylophis muelleri Bouleng. Ann. k. Mag. N. H. (6) ix. 

 1892, p. 74. 



Eryx muelleri Bouleng. Cat. Sn. i. p. 128, pi. v. fig. 2, 

 Mauritania, N. Nigeria, Togoland, Egyptian Soudan. 



Family C o L u b r i D .E. 

 Three parallel series : — 



No poison-fangs ; all tlie teeth solid A. Aglyplia. 



Poison-fangs behind 1j. Opisthogl ypha. 



Poison-fangs in front C. Proteroglypha. 



A. Aglyplia. 



I. Ijoruiil })rusent. 



A. llostral without angular horizontal edge. 



1. Pupil round ; a single anterior temporal ; not more than two upper labials 



entering the ej'c ; body not very slender, with not more than 166 ventrals ; 

 subcaudals not more than 95 ; scales not at all oblique ; anal usually 

 divided (if entire, scales smooth in 17 rows). 



Two internasals Tropklonotus. 



A single internasal ; nasal semidivided ; scales in 25 rows Helicops. 



A single internasal ; nostril between two nasals ; scales in 



21 or 23 rows Kydnetliiops. 



2. Pupil round ; a deep concavity on the side of the snout, between the 



nostril and the eye ; anal entire. 



Scales keeled, in 23 rows Bothrophtlialmus. 



Scales smooth, in 17 or 19 rows Bothrolycus, 



