GERRHONOTUS. 39 
Gerrhonotus mutticarinatus, Blainv. Nouv. Ann. Mus. d’Hist. Nat. 1835 » Pp. 289, t. 25. fig. 2 (bad) ; 
Dum. & Bibr. Erp. Gén. v. p. 404; Bocourt, l. c. p. 357, t. 21c. figg. 5. 
Elgaria kingii, Gray, Ann. Nat. Hist. i. 1838, p. 390, and Cat. Liz. p. 54. 
Gerrhonotus multifasciatus, Dum. & Bibr. Erp. Gén. v. p. 401. 
Gerrhonotus wiegmanni, Gray, Cat. Liz. p. 54. 
Tropidolepis scincicauda, Skilton, Amer. Journ. Sc. 1849, vii. p. 202, figg. 1-3 (bad). 
Elgaria formosa, Baird & Gir. Proc. Ac. N. Sc. Phil. 1852, p. 175; and in Wilkes’s U. S. Explor. 
Exped., Herp. p. 206, t. 23. figg. 10-17. 
Elgaria nobilis, Baird & Gir. Proc. Ac. N. Se. Phil. 1852, p. 129. 
Gerrhonotus nobilis, Baird & Gir. in U. 8. & Mex. Bound. Exped., Rept. p. 11, t. 25. figg. 1-8. 
Elgaria scincicauda, Baird & Gir. in Stansbury, Exped. Utah, p. 348, t. 4. figg. 1-3; and in Wilkes’s 
U.S. Expl. Exped., Herp. p. 210, t. 28. figg. 1-9. 
Elgaria grandis, Baird & Gir. Proc. Ac. N. Sc. Phil. 1852, p.176; and in Wilkes’s Explor. Exped., 
Herp. p. 212, t. 22. figg. 1-9. 
Elgaria marginata, Hallow. Proc. Ac. N. Se. Phil. 1852, p. 179; and in Sitgreave, Exped. Zuni 
& Colorado, p. 114, t. 3 (bad). 
Gerrhonotus kingii, Bocourt, 1. c. p. 839, t. 21 c. figg. 2. 
Hab. Norta America, British Columbia, California, and New Mexico.—Mexico and 
along the Pacific side of Cewrran America to Costa Rica, Cartago (Mus. Brit.). 
Dorsal scales keeled, in from fourteen to sixteen (seventeen), nuchal and ventral in 
twelve longitudinal series. Nasal shield in contact with the rostral. Normally seven 
shields on the upper surface of the snout, between the vertical and rostral, which are 
( a—a! 
(a") 
disposed thus < 64—d/ ( ; but this number may be increased by the intercalation of a 
a—d' } 
central shield a" between the @ and 6 series, or diminished by the confluence of two 
shields. Supranasals absent. Also the coloration varies considerably, but generally 
the sides, and sometimes also the back, are ornamented with dark or black transverse 
stripes, many of the scales composing the bands having yellow or white tips. 
The variations in the scutellation of the snout do not indicate local races, but occur 
in specimens from the same locality, or an identical scutellation may be found in very 
distant localities; being unaccompanied by other characters, these variations are useless 
for specific distinction. 
The size of the unpaired shield ¢ varies very much, and is sometimes much increased 
at the expense of the paired shields in front and behind. It is smallest in the type of 
C. burnettii (exact locality unknown) and in a specimen from Vancouver’s Island *; six 
other specimens from the same locality and from the mainland opposite have this 
* This would be probably the Elgaria principis, Baird & Gir. Proc. Ac. N. Sc. Phil. 1852, p. 175, and in 
Wilkes’s U. 8. Explor. Exped., Herp. p. 214, t. 22. figg. 9-16, 
