140 Proceedings of the Biological Society of Washington. 



form coloration, while they differ from palluma in having considerably less 

 spinose tails and in not having the mid-dorsal granules very considerably 

 enlarged and flattened as well as lacking the characteristic color pattern. 

 Description. — -Head small, snout short; nostril latero-superior; ear open- 

 ing large; head scales small, subequal; sub-conical on the temples; sides of 

 neck and throat strongly plicate; body much depressed ; dorsal scales minute 

 granular, with a few enlarged granules scattered over the dorsal and lateral 

 surfaces; lateral scales minute, granular; mid-dorsals but very slightly en- 

 larged (less so than in palluma) and very slightly flattened; ventrals much 

 larger than dorsals, squarish, smooth, in regular transverse series; limb 

 short, adpressed hind limb reaches to the axilla; digits short and thick; 

 males with a series of 8 (9 or 10) preanal pores, tail once and one-fourth the 

 length of head and body with whorls of spinose scales which are much 

 smaller than those figured in Bell (Voy. Beagle, 3, 1842, Plate 14, fig. 2) for 

 palluma (called flagellifer) and more spinose than in Koslowsky's figure of 

 patagonica, although the spine-like scales are not so very much larger. In 

 palluma the color is olive with blackish marbling, the pattern being well 

 defined in several Chilean specimens in the Museum of Comparative Zo- 

 ology. While Koslowsky's types from Patagonia were all speckled with 

 light markings on the dark background, Mr. Peters' series is all exactly alike 

 and shows a rich mahoganj' brown on the body, lighter and more yellowish 

 on the tail with no trace of markings whatsoever. 



Liolaemus kingii Bell. 

 Two specimens apparently perfectly typical. 



Liolaemus elongatus Koslowsky. 



Six specimens of this little known species vary slightly from the types 

 in that the range of variation in the number of rows of scales about the 

 body is extended to 112 — the highest number mentioned by Koslowsky 

 being 103. Peters' examples are old adults and are chubby and squat and 

 quite similar in habit to L. kingii but more depressed. The name elongatus, 

 inapt at best, was evidently suggested by the habit of tlie yoimg. 



Liolaemus magellanicus (Homb. & Jacq.) 



Four specimens before me from liuanuluan are perfectly typical niagel- 

 laniam and I have compared them with specimens from Patagonia, identi- 

 fied by Stejneger as Jj. lineomaculntus Boulenger and captured by the 

 Hatcher Expedition. 1 can not b(; persuaded, willi only this material avail- 

 able! for comparison, tliat these two species really should be combined, 

 although this proposal has been made by Koslowsky (Rev. Mus. La Plata, 

 8, 1898, p. 173). 



Liolaemus boulengeri Koslowsky. 



There are five specimens of this elegant form at hand and the finding 

 that they occurred at Huanuluan was to be expected, as the co-types came 

 from both Chubut and Neuquen. 



