47 



Gerrhonotus scincicaudus, Skilton, Am. Jour. Sci. Arts, 1849, p. 202. 



Pacific and Lower Californiau regions. 

 Gerrhonotus infernalis, Baird and Girardj Cope, Proc. Acad. Phila., 



1866, 322. Western Texas. 



HELODEEMIDAE. 



Heloderma, Wiegmaun. 



Heloderma suspectum, Copej Baird, U. S. Bound. Surv., plate xxvi. 

 Sonoran region. 



IGUANIA. 



IGUANIDAE. 

 HoLBROOKiA, Girard. 



MolbrooMa maculata, Girard, subspecies maculata, Girard j Stansbury's 

 Eeport, 1852, p. 342. Central and Sonoran subregions. 



Holbroohia maculata, Girard, subspecies propinqua, Baird and Girard, 

 Proc. Acad. Phila. 1852, p. 126. Texas. 



HolhrooMa texana, Troschel ; Baird and Girard, Proc. Acad. Phila., 1852, 

 p. 125. Sonoran region ; Western Texas. 



Callisaurus, Blaiuville. 



CalUsaurus dracontoides, Blainv., subspecies ventralis, Hallowell; Sit- 

 greave's Eeport Zuni, p. 117. Sonoran region. 



Gallisaurus dracontoides, Blainv., subspecies gabMi, Cope, MS. North- 

 ern Lower California. 



Callisaurus dracontoides, Blainv., subspecies dracontoides, Blainv., Nouv. 

 Ann. de Mus., p. 426. Southern Lower California. 



Uma, Baird. 



Uma notata, Baird, Proc. Acad. Phila., 1858, p. 253. Sonora region. 



Sauromalus, Dumeril. 



Sauromalus ater, Dumeril ; Baird, U. S. and Mex. Bound. Surv., p. 6. 



Sonoran region. 



Crotaphytus, Holbrook. 



Crotaphytus colloHs, Say ; Holbrook, N. Am. Herp., ii, p. 79. Sonoran 

 region ; Central region to latitude 40°. 



