the Genus Gerrhonotus. 47 



grandis, the description of which it agrees with in other 

 respects, having, however, forty-eight instead of fifty transverse 

 series of scales between occiput and commencement of tail. 

 Head broad posteriorly ; supranasals two pairs, oblique, un- 

 symmetrical ; internasal wide, transverse ; fronto-nasals large 

 and broadly in contact along the median line. Scales of back 

 keeled, moderate, in forty-eight transverse series from occiput 

 to tail, thirty-two between axil and groin ; in fourteen longi- 

 tudinal series ; ventral plates in twelve longitudinal series. 

 Limbs short, not meeting. Tail once and a half the length of 

 head and body. 



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

 Philad. 1852, p. 176 ; Wilkes's Expl. Exped. xx. p. 212, 

 pi. xxii. figs. 1-9. 



Oregon. 



Fifty transverse series of scales between occiput and com- 

 mencement of tail ; fourteen longitudinal dorsal series. 



G. (Elgaria) scincicauda, Skilton ; Baird & Gir., Stansbury's 

 Exped. p. 348, pi. iv. figs. 1-3 ; Wilkes's Expl. Exped. 

 xx. p. 210, pi. xxiii. figs. 1-9. 



Closely allied to the preceding. 



Scales in fifty-two transverse, fourteen longitudinal series. 



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

 Philad. 1852, p. 175; Wilkes's Expl. Exped. xx. p. 206, 

 pi. xxiii. figs. 10-17. 



Upper California. 



Closely allied to the last two. 



Scales in forty -eight transverse, sixteen longitudinal series. 



?G. multicarinatus, De Blainv. Nouv. Ann. du Mus. iv. 

 p. 289, pi. xxv. fig. 2 ; Dum. & Bibr. Erpet. G(me*r. v. 

 p. 404 ; Hallowell, Pacific Railr. Exped., Rept. p. 9, pl.ix. 

 fig. 1. 



California. 



G. Burnettii, Gray, Catal. of Lizards, p. 54. 



South America. Type in British Museum. 



Head rather short ; supranasals two pairs, large, one behind 

 the other, followed by a subcircular internasal ; fronto-nasals 

 well developed and broadly in contact, coming obliquely for- 

 wards to meet the supranasals, and thus enclosing the inter- 



