138 IGUANIDE, 
24. LIOLAMUS *. 
Liolemus, Wieym. Nova Acta Ac. Leop.-Carol. xvii. i. 1835, p. 227, 
and Herp. Mex. p.18; Gravenh. Nova Acta Ac. Leop.-Carol. xviii. 
1888, p. 717 ; Fitzing. Syst. Rept. p.73; Gray, Cat. Lis. p. 212; 
Girard, U.S. Explor, Exped., Herp. p. 884. 
Proctotretus, part., Dum. §& Bibr. iv. p. 266. 
Ptychodeira, Fitzing. 1. c. p. 74; Girard, l. ¢. p. 840. 
Liodeira, Fitzing. lc. p. 74; Gray, lc. p. 210; Girard, l. c. p. 889. 
Sauridis, Tschudi, Faun. Per., Rept. p. 33. 
Proctotretus, Gray, l. c. p. 216. 
Chrysosaurus, Gay, Hist. Chile, Rept. p. 24. 
Rhytidodeira, Girard, Proc. Ac. Philad. 1857, p. 198, and U.S. 
Explor. Exped., Herp. p. 349. 
Eulemus, Girard, Ul. cc. pp. 198, 357. 
Ortholeemus, Girard, ll, cc. pp. 198, 368. 
Tympanum distinct. Body depressed ; no dorsal crest. Dorsal 
scales more or less imbricate, keeled. Upper head-scales small or 
rather large. No fold across the throat; no gular appendage. 
Digits subcylindrical, with keeled lamelle inferiorly. No femoral 
pores. Male with anal pores. Tail conical or slightly depressed. 
Lateral teeth tricuspid; pterygoid teeth. Sternal fontanelle present 
or absent. No abdominal ribs. 
America south of the Equator. 
Synopsis of the Species. 
I. Sides of the neck without any folds, covered with scales similar 
in every respect to those of the upper surface. 
28 or 30 scales round the middle of 
the body; nostril sublateral, well 
visible from above.............. 1. nitidus, p. 140. 
30 or 32 (or less) scales round the 
midddle of the body; nostril per- 
fectly lateral... ............045 2. chilensis, p. 141. 
40 scales round the middle of the 
DOdy: smc eussedewsied es ene aed 3. gravenhorstii, p. 142. 
II. Sides of neck more or less distinctly folded, covered with scales 
smaller than those of the upper surface. 
A. Scales on the middle of the back larger than those on the sides 
of the belly; scales of the sides of the neck rhomboidal, im- 
bricate, keeled. 
* Liolemus elegans, Tschudi, Faun. Per., Rept. p. 88.—Chancay, Peru. 
LD. (Sauridis) modestus, id. 1, e. p. 84.—Miraflores, Peru. 
Chrysosaurus morio, Gay, Hist. Chile, Rept. p. 47.—Valdivia. 
+ Absent in L. wiegmanni and L. multimaculatus. 
