614 PROCEEDINGS OF THE NATIONAL MUSEUM. 



This specimen may possibly be referable to /t. pelviceps Cope, 

 but the head and throat are so badly damaged that it is impossible to 

 determine. 



12. AMEIVA AMEIVA PETEKSII (Cope). 



Eight specimens mostly adults (U.S.N.M. Nos. 60685-91) from 

 Santa Ana, 3,400 feet altitude. 



These specimens are typical of this race as recently defined.^ The 

 occurrence of these specimens in the Urubamba Valley considerably 

 extends the lizard's range. 



13. PRIONODACTYLUS SPINALIS Boulenger. 



Two specimens (U.S.N.M. Nos. 60729-30) from Ollantaytambo, 

 July 14, 1915; one (U.S.N.M. No. 60745) from the Cosireni River, 

 August, 1915; and 15 (U.S.N.M. Nos. 60663-77) from Tocopoqueyu 

 in the Occobamba River Valley, July 25, 1915. 



Two paratypes^ of this species are before us. They fall well 

 within the range of variation of scutation exhibited in this series 

 of 18 specimens collected by the expedition. The smaller of the 

 paratypes is, however, somewhat different from any of these speci- 

 mens. In addition to the vertebral stripe, there is a dorso-lateral 

 stripe of light gray on each side of the back. In all but one of our 

 specimens the vertebral stripe is faintly indicated and the other two 

 stripes are entirely wanting. This difference of coloration may be 

 a constant feature, and our specimens may represent a distinct geo- 

 graphical race of Prionodactylus spinalis in southern Peru. But in 

 view of the absence of any definite anatomical character, we do not 

 feel justified in describing it. 



The type locality of Prionodactylus spinalis is given in the origi- 

 nal description as Huancabamba, Peru. Doctor Boulenger has in- 

 formed us by letter that this was probably an error and that the 

 specimens may have come from Oxapampa. If they came from 

 Huancabamba, it was certainly from the Huancabamba of central 

 but not that of northern Peru. 



Oxapampa (also spelled Oxabamba) is on the Rio Huancabamba, 

 a small tributary of the Rio Palcazu, about 40 miles east-northeast 

 of Cerro de Pasco. There are two towns named Huancabamba in 

 Peru — one a little village on the Rio Pluancabamba, mentioned above, 

 and the other a town in the Department of Piura. 



14. OREOSAURUS ANOMALUS, new species. 



Diagnostic characters. — Habit and coloration similar to Oreo- 

 saurus ocellifer Boulenger: scutation somewhat the same, but differ- 

 ing in the following striking features : A pair of supranasals separat- 



1 Barbour and Noble, Bull. Mus. Comp. Zool., vol. 59, No. 6, 1915, p. 4G6. 

 " Mus. Comp. Zool., No. 8082, and Amer. Mus. Nat. Hist., No. 5280. 



