L. G. ANDERSSON, NEW LIZABDS. 9 



termed prseanal», in my specimen 7 — 8, among them no prse- 

 anal. Although the body of my specimen is shorter than 

 the specimen of P. unicolor measured by Boulenger in 

 Cat. of Lizards (54, respectively 63 mm), the limbs of the 

 former are longer; före limbs 14 and hind limbs 21 mm in- 

 stead of 13 and 17 in P. unicolor. The tail is longer in my 

 specimen, being 61 % of the total length (54 + 84 mm), only 

 54 % (63+75 mm) in P. unicolor. 



In Miiteilungen NaturJiist. Museum in Hamburg 1910 p. 

 30 Fr. Werner has described a species of Proctoporus, P. 

 holivianus, from Bolivia which also seems to be nearly allied 

 to P. unicolor from which it differs to some extent in the 

 same way as this one. It has, however, only 28 scales round 

 the body, ventrals in 10 longitudinal and 26 transverse rows, 

 eight long posterior anal plates, eight transverse rows of 

 scales from the chin-shields to the first gular fold, three 

 supraoculars, interparietal nearly twice as long as broad (in 

 my specimen not quite 1 Vs times as long as broad). 



When more material for comparison has been obtained, 

 it is possible that the differences, stated between Pr. uni- 

 color and my species, as well as between these and that of 

 Werner, may be proved to be only individual ones, and 

 thus my species synonymous with P. unicolor and P. holi- 

 vianus. With the present state of our knowledge I think, 

 however, that the best proceeding is to regard it as a new 

 species. 



Prionodactylus holmgreni n. sp, 



Snout very long, body moderately elongate; a large 

 rostral occupying a large space on the upper side of the 

 snout: two frontonasals, quadrangular, each twice as long 

 as broad. Prsefrontals large, forming a long median su- 

 ture. Frontal hexagonal, narrower behind, as long as its di- 

 stance from the rostral; two frontoparietals; interparietal 

 large, a little larger than parietals; three occipitals, the 

 median the smallest; four nuchals, the median pair con- 

 siderably larger than the lateraj. Three supraoculars, ante- 

 rior largest; anterior supraciliary large, widened anteriorly 

 to the shape of a small first supraocular. Nostril in the 

 middle of a single nasal, a loreal and a frenoorbital. A series 



Arkiv för zoologi. Band 9. K:o 3. * 



