48 On the Genus Gerrhonotus. 



nasal. Dorsal scales in forty-eight transverse series from 

 occiput to tail, and sixteen longitudinal; ventral plates in 

 twelve longitudinal series. Limbs short, not meeting. Tail 

 short, only equal to length of head and body. 



G. cceruleus, Wiegm. Isis, 1828, p. 379. 

 Brazil. 



G. (Elgaria) principis, Baird & Gir. Proc. Acad. Nat. Sc. 

 Philad. 1852, p. 175; Wilkes's Explor. Exped. xx. 

 p. 214, pi. xxii. figs. 1-16. 



Oregon. 



Dorsal scales in forty-eight transverse, fourteen longitudinal 

 series. 



G. Moreletii, Bocourt, Nouv. Arch, du Mus. 1872, p. 102. 



Guatemala. 



Founded by M. Bocourt upon the specimen given in 

 Dumeril's Catalogue (1851) as the unique example of G. tes- 

 sellatus. The British Museum now possesses four specimens 

 of this well-marked species : two of these seem referable to 

 G. fulvus of M. Bocourt, but appear scarcely specifically 

 distinct. This is the lizard which Mr. Salvin obtained at 

 Lanquin, and which he mentions in ' Proc. Zool. Soc' 1860, 

 p. 455, under the name G. Wiegmanni, as follows: — "A single 

 specimen was the only one that came under my notice ; this I 

 caught on the convent wall. It was shown me by the priest, 

 who said that he had noticed it on the same spot several nights 

 in succession." 



G. fulvus, Bocourt, I. c. p. 104. 



Elgaria marginata, Hallowell, Proc. Acad. Nat. Sc. Philad. 

 1852, p. 179 (unrecognizable) ; Sitgreave's Exped. Zuni 

 and Colorado, p. 114, pi. iii. (bad). 



Probably G. tessellatus. 



G. olivaceus, Baird, Emory's U. S. B. Exped., Rept. p. 11 ; 

 Proc. Acad. Nat. Sc. Philad. 1858, p. 255 (description in- 

 sufficient). 



" No single frontal." 



California. 



