L. G. ANDERSSON, NEW LIZARDS. 



11 



Evidently this species is nearly allied to Pr. bolivianus, 

 described by Fr. Werner in Zool. Änz. 1899 p. 481, but 

 I think it is well distinguished from that by the differences 

 shown in the table below. 



Occipitals 



(Postoccipitalien accor- 



ding to Werner) 



Ith^ 3th and 4th upper 

 labials 



2d upper labial 



Enlarged galars 



Collar-shields 



Scales from occiput to 

 base of tail 



Transverse rows of 

 ventrals 



Praeanals 



Pr. bolivianus 

 "klein, unregelmässig" 



"gleich gross" 



"klein" apparently 

 smaller than the other 



"4 in jeder Längsreihe" 



32 ("zum Saeram") 



6 (2 + 4) 



Pr. liolmgreni 

 .three,large, very regular 



increasing in size from 

 the first 



as large as the first 



10 in eacli row 



3 



43 



22 



4 (2 + 2) 



The colour of the two species appears also to differ: 

 According to Werner Pr. bolivianus is »dunkelbraun mit 

 zwei Schuppen breitem hellerem Längsband vom Occiput 

 iiber die Vertebralregion»; no trace of this is to be seen in 

 my specimen; instead of this a very faint dark line runs in 

 the present specimen along the median line; in addition to 

 this the dark distinct band present in my specimen from the 

 snout through the eye, limitid below by pnre white, is not 

 observed in Pr. bolivianus. 



I have named this species in honour of my friend Dr. 

 N. Holmgren who on his journeys in the Andes of Peru 

 and Bolivia collected it as well as the type-specimen of fore- 

 going species. 



