REVIEW OF DISPHOLIDINI WITH NEW TANZANIAN GENUS AND SPECIES 



73 



4b. Cloacal shield divided; midbody scale rows 15-19; occipitals 2 

 Rhamnophis aethiopissa 



5a. Dorsal scales twice as long as lower row of laterals and ventrals; 

 midbody scale rows 13 (rarely 15) Thrasops flavigularis 



5b. Dorsal scales subequal in length to the ventrals; midbody scale rows 

 15-19 (rarely 21) 6 



6a. Three supralabials in contact with lower postocular 



Thrasops occidentalis 



6b. Two supralabials in contact with lower postocular 7 



7a. Midbody scale rows usually 19; ventrals 187-214 



Thrasops jacksonii 



7b. Midbody scale rows usually 17; ventrals 168-184 



Thrasops schmidti 



8a. Head elongate; pupil horizontal, keyhole shaped; eight supralabials, 

 fourth and fifth entering orbit 9 



8b. Head short; pupil round or pear-shaped; seven supralabials, third 

 and fourth entering orbit Dispholidus typus 



9a. Top of head, including temporal region, uniform green; black 

 crossbands or chevrons on neck; habitat forest 10 



9b. Top of head uniform green or black speckled, temporal region 

 always brown, speckled with black, or pink, shields margined with 

 black; neck with black lateral blotches; habitat usually savanna 

 1 1 



10a. Rostral and nasals strongly recurved onto top of snout; infralabials 

 7-11, mode 9; supralabials immaculate or with fine green or grey 

 stipple T kirtlandii 



10b. Rostral and nasals not, or only slightly, recurved onto top of snout; 

 infralabials, 9-13, mode 1 1; supralabials with scattered black spots, 

 usually including a triangle on the sixth labial T. usambaricus 



I la. Top of head bright green to pale brown, uniform or speckled 



with black; temporals brown speckled with black 



T mossambicanus 



I I b. Top of head blue-green with pink and black speckling forming a 'Y' 



or 'T' marking, or speckling covering entire top of head; temporals 

 pink margined with black T capensis 



Acknowledgements. We are indebted to K.M. Howell (UDSM) for 

 donating the snake that becomes the holotype of Xyelodontophis uluguruensis. 

 VW wishes to particularly thank the following curators that permitted 

 dissection of material in their care: K.-S. Chifundera (IRSL). G. Lenglet 

 (IRSNB), J. Hanken and J.P. Rosado (MCZ) and R. Gunther (ZMB). DGB is 

 grateful to D. Rotich (NMK) for the loan of Thrasops schmidti material and 

 I. Ineich (MNHN), A. Resetar (FMNH), R. Gunther (ZMB) and G. Lenglet 

 (IRSNB) for printouts of their Dispholidini holdings. 



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