358 SAURIA. 



1. EULAEMUS TENUIS, Grd. 

 (Plate XXVIII, figs. 9-16.) 



Spec. Char. — Cephalic plates usually smooth, occasionally covered 

 with minute granules. Auricular aperture anteriorly subtubercular. 

 Supralabials smaller than the labials. Temporal scales moderate, 

 subcarinated. Two series of infralabials. Four pairs of mental 

 shields. Dorsal scales small ; lateral scales smaller, not imbricated, 

 obscurely keeled; abdominal scales smooth. Posterior aspect of 

 thighs wholly granular. Tail long and slender. Brownish-black 

 above, with transverse, subcrescentic, black bands ; beneath varie- 

 gated. 



Syn. — Proctotretus tenuis, DuM. & Bisa. Erpet. gen. lY, 1837, 279.— Bell, Zool. 

 Voj. Beagle, Y, 1843, 7. PI. iii, fig. 2.— Guich. in Gay, Hist, de Chile, Zool. II, 1848, 

 32. Erp. Lam. i, fig. 1,— Homer. & Jacq. Yoy. au Pole Sud et dans TOceanie. PI. 

 II, bis, fig. 2.— Grd. in Gilliss, U. S. N. Astron. Exped. S. Hemisph. II, 1855, 217. 

 PI. XL, figs. 1-4. 



Liolaemus {Liodeird) tenuis, FiTZ. Syst. Eept. I, 1843, 74. 



Liolaemus tenuis, Gray, Catal. Lizz. Brit. Mus. 1845, 214. 



Liolaemus j.mnctatus, Gray, MSS. Brit. Mus. 1836. 



Eulaemus tenuis, Grd. in Proc. Acad. Nat. Sci. Philad. November, 1857, 198. 



Descr. — The form, although slender in its general appearance, is 

 less a characteristic of this species than it really is for several others 

 of its congeners. The body is depressed ; swollen upon its middle 

 region ; the limbs being moderate-sized : the anterior pair, when 

 stretched alongside the body, is far from attaining the groins, and 

 the tip of the longest toe of the posterior pair, when brought forwards, 

 reaches the middle region of the neck. The tail is elongated, conical, 

 tapering into a point, and nearly twice as long as the body and head 

 together. The tongue is large and fleshy, elongated and depressed, 

 sublanceolated, occupying the whole space between the two branches 

 of the lower jaw. The teeth are of moderate development, smallest 

 anteriorly, and subcylindrical ; whilst posteriorly, they are somewhat 

 compressed, or else stouter at the base. 



The head is depressed, subtriangular when viewed from above, and 

 rounded upon the snout. The plates, which cover its surface, are 

 generally smooth, but exhibit sometimes a very minute granulation, 

 apparent only through a magnifying glass. The cephalic plates, pro- 



