REPTILES FROM SOM AL IL AND 15 



p. Parietal shields as long as the distance between the 

 frontal and the end of the snout. 



7. B. fuliginosus, Boie {L. unicolor, Schleg. nee Boie). — Soudan. 



b. Only one pair of chin-shields meeting on the median line. 



8. B. mentalis, Gthr. — Damaraland. 



II. Subcaudals single {Holuropholis , A. Bum.). 



9. B. olivaceus^ A. Bum. (=- B. poensis^ Gthr.). — West Africa. 



12. Psa,ixi]iiopli.is Ibiseriatus , Peters. 



Two specimens. Route from Obbia to Berbera. 



Nine upper labials, fifth and sixth or fourth, fifth, and sixth 

 entering the eye. Scales in 15 rows. Ventrals 142, 142; sub- 

 caudals 106, 113. 



EXPLANATION OF PLATE I. 



Fig. 



