IGU IGUANID^. 



Total length 1 70 millim. 



Head 18 



Width of head 15 „ 



Body 62 „ 



Fore limb 29 „ 



Hind limb 46 



Tail 90 



If 



J5 



Chili ; Patagonia ; Argentine Republic. 



n~c. (5 5 . Patagouia, C. Darwin, Esq. [P.]. 



d. S . High Pampas of S. Luis, E. W. White, Esq. [C.]. 



Mendoza. 

 e-g. <5 & Yg. 13 miles off Cape S. Antonio, E. Gibson, Esq. [P.]. 



Buenos Ayres. 



3. Saccodeira azurea. 



Tropidocephalus azureus, Miiller, Verh. Nat. Ges. Basel, vii. 1882, 



p. IGO, pi. — , and 188o, p. 710. 

 Liolaemus azureus, Bouleng. Ann. ^- Mag. N. H. (o) xv. 1885, p. 192. 



Very closely allied to the preceding species, with which it agrees 

 entirely in coloration ; differing in the following characters : — Gular 

 and ventral scales keeled, ending in a short spine. The adpressed 

 hind limb reaches the ear. Digits longer ; third and fourth fingers 

 nearly equal. Tail longer, about once and two thirds as long as 

 bead and body. 



Total length 205 millim. 



Head 17 „ 



Width of head 14 „ 



Body 58 



Fore limb 31 



Hind limb 53 



Tail 130 



j» 



Uruguay ; Southern Brazil. 



a. S • Dept. of Soriano, Uruguay. — Havers, Esq. [P.]. 



b. 2 . Eio Grande do Sul. ' Dr. H. v. Ihering [C.]. 



26. LIOCEPHALUS *. 



Tropidurus, part., Fifzing. N. Classif. Rept. p. 17. 



Leioceplialus, Gratj, Phil. Mag. (2) ii. 1827, p. 207 ; Fitzing. Sgd. 



Bept. p. 70. 

 Holotropis, Dinn. Sf Bibr. iv. p. 259. 

 Steironotus, Fitzing. I. c. 

 Leiocephalus, part., Grag, Cat. Liz. p. 217. 



* 1. Leiocephalus microlepis. Gray, Cat. p. 274. — Specimen missing. 



2. Scelotrema formosum, Tschudi, Faun. Per., Herp. p. 27. i^l. i. fig. 1. — 



Peru. 



3. Scelotrema crassicaudatum, id. 1. c. — Peru. 



