30 A SYNOPSIS OF THE SPECIES OP 



The species of Cnemidophorus inhabit dry open ground where they can observe 

 their insect prey, and watch their enemies. From the latter they escape by the ex- 

 treme rapidity of their movements, which renders it difficult to follow them with the 

 eye, to which they appear as a streak flying over the ground. For this reason they 

 are popularly known as " swifts." They are nevertheless frequently caught and 

 eaten by snakes. 



Cnemidophorus murinus Laur. 



Gray, Catal. B. M., p. 21 ; Dum. Bibr., Erp. Gen., V, 136 ; Bocourt, Miss. Sci. Mex. Kept., Pl. XX, Fig. 1 ; 



Boulenger, Catal. Liz. B. M., Ill, 361, Leps murinus Laurenti. 

 Guiana, CuraQoa, Trinidad. 



Cnemidophorus espeutii Boulenger. 



Catal. Liz. B. M., IH, 362, Pl. XIX. 



Old Providence Id. ; Swan Id. ; both off the east coast of Central America. 



Cnemidophorus lemniscatus Daudin. 



Gray, Catal. Liz. B. M., 21 ; Dum. Bibr., Erp. Gen., V, 128 ; Bocourt, Miss. Sci. Mex. Rept., Pl. XXc, Fig. 2 ; Bou- 

 lenger, Catal. Liz. B. M., Ill, 363. 

 Tropical South America east of the Andes. 



Cnemidophorus nigricolor Peters. 



Sitzber. Gess. Nat. Fr. Berlin, 1873, 76 ; Bocourt, Miss. Sci. Mex., Pl. XXc, Fig. 3 ; Boulenger, Catal. Liz. B. M., 364. 

 Los Roques Ids. off La Guayra, New Granada. (Known only to me by descriptions.) 



Cnemidophorus lacertoides Dura. Bibr. 



Erp. Gen., V, 134 ; Bocourt, Miss. Sci. Mex. Rept., XXc, Fig. 10 ; Boulenger, Catal. B. M., Ill, 373. 

 Southern Brazil, Uruguay, Argentine. 



Cnemidophorus longicaudus Bell. 



Gray, Catal. Liz. Brit. Mus., 21 ; Bocourt, Miss. Sci. Mex. Rept., Pl. XXc, Fig. 13 ; Boulenger, Catal. Liz. Brit. 



Mus., in, 374. 

 Amiva longicauda Bell, Zool. Beagle Rept., 28, Pl. XV, Fig, 1. 

 Northern Patagonia. 



Cnemidophorus deppei Wiesfmann. 



Herpet. Mexicana, 1834, p. 28 ; Bocourt, Miss. Sci. Mex. Rept., p. 281, Pl. XX, Fig. 3 ; Boulenger, Catal. Liz. B. M., 

 1885, 371. 



There are three well-marked subspecies of the C. deppei, which differ in their 

 coloration, and in the number of their femoral pores, and which have distinct geo- 

 graphical ranges. They are defined as follows : 



Four with or without a median, or five narrow stripes on each side ; sides green, unspotted ; 

 belly yellowish to black ; hind legs with large spots ; femoral pores 17-19 C. d. deppei 



