o/|8 G. A. BOULENGER 



shoulder, sometimes accompanierl by other dark and light varie- 

 gations; whitish beneath, throat often speckled with brown, belly 

 sometimes with red dots. 



^ ? 



Total length 87 millim. 86 millim. 



Head 11 « 10 » 



Width of head (5. 5 » » 



Body :24 » :23 « 



P^ore limb 16 » lo » 



Hind limb ±1 » 19 « 



Tail a2 « ol 



Ghinda ; Neberet Valley ; Emberemi. 



This species is closely related to P. flavipunclatm, from w hich 

 males are easily distinguished by the strongly developed dorsal 

 crest. Having examined a very large material, 294 specimens of 

 this new species, and a good number of P. flavipunclalus, I am 

 well satisfied as to the validity of the distinction now drawn. 



Seven species of Pi-isturas ap})ear to be distinguishable : — 



I. Rostral shield bordering' the nostril. 



A. Tail crested. 



Crest, in the male, very strong on the back, 



extending to the nape ; hind limb reaching 



the shoulder or between the shoulder and 



the ear 1. /)e;'cr/.s<<7^<«, Bigr. 



Crest feeble on the back, if distinct, and not 



extending on the anterior half of the body; 



hind limb reaching tlie axilla or tlie siiouhler 



in the adult '2. fldvipimctatus, Riipp. 



Crest not extending on the body; hind limb 



reaching the ear-opening or between the 



shoulder and the ear-opening .... 'A. rupestris, Blanf. 



B. Tail not crested 1. hisi/piis, liiaut'. 



II. Rostral not bordering the nostril. 



Snout obtuse; tail not ci'ested .... 5. cnici/er, Val. 

 Snout obtuse; tail crested above . . . (>. piiillipsii, Hlgr. 

 Snout pointed; tail (when intact) cres^ted 

 above and beneath . . . . . . . 7. eartcri, Gray. 



