84- 3. IGUAN1DJE 



lower surfaces are white, suffused on the chin and gular 

 region with very dark reddish brown, which color is solid 

 centrally but outlines large rounded spots on the lower jaw 

 and side of neck. 



Length to anus 82 94 109 112 122 125 



Length to tail 167 204- 235 



Snout to orbit 6 6 l /2 7 7 8 8J^ 



Snout to ear 15 16 19 19 21 21 



Orbit to ear. 4j 5 6 6 7 7 



Fore limb 32 37 42 39 47 47 



Hind limb 65 75 79 78 90 88 



Base of fifth to end of 



fourth toe 27 31 31 30 35 34 



Distribution. Santa Catalina Island, Gulf of Cali- 

 fornia, Mexico. 



Remarks. This species is distinguished from the others 

 of the genus by the intense brown pigmentation of the chin 

 and throat and the rounded spots on the lower jaws and 

 sides of the gular region where the other kinds have longi- 

 tudinal streaks. 



Type. No. 50505, Mus. Calif. Acad. Sci.j Joseph R. 

 Slevin, collector, June 12, 1921. 



Type locality. Santa Catalina Island, Gulf of Cali- 

 fornia, Mexico. 



Genus 5. Sauromalus 



Sauromalus DUMERIL, Arch. Mus. d'Hist. Nat., Vol. VIII, 1856, p. 535 



(type, ater). 

 Eufhryne BAIRD, Proc. Acad. Nat. Sci. Phila., 1858, p. 253 (type, 



obesus)- y COPE, Proc. Acad. Nat. Sci. Phila., 1864, p. 177. 



This genus includes a few species whose relation to the 

 various genera of iguanas is shown not only by their large 



