BARBOUR AND NOBLE: LIZARDS OF THE GENUS AMEIVA. 471 



The specimen described is one of the types received in exchange 

 from the Philadelphia Academy. Ruthven (Occ. papers, Mus. zool. 

 University Mich., December 27, 1913, no. 2), has discussed the 

 locality data of the types and concludes, " It is highly probable that 

 Ameiva bifrontata does not occur on St. Thomas but is a Venezuelan 

 form that is represented in Colombia by Ameiva divisa (Fischer)." 

 We may emphasize what Ruthven has said viz., that this lizard cer- 

 tainly does not occur upon St. Thomas, this is proved by the recent 

 carefully made collections. There is no reason to believe that it ever 

 did. It is found in Venezuela, and is probably confined to that state. 



Habitat: — Venezuela. 



Ameiva bifrontata divisa (Fischer). 



Description: — Adult male; M. C. Z. 10573; near La Tigrera, Santa 

 MartaMts., Colombia; 1913; A. G. Ruthven. 



This race differs from typical bifrontata only slightly in scutation 

 but decidedly in coloration. As Ruthven (Occ. papers, Mus. zool. 

 University Mich., December 27, 1913, no. 2), has pointed out the 

 Colombian race differs from the Venezuelan form in having the series 

 of granules on the inner margin of the supraoculars ending on the 

 posterior corner of the second instead of having the " three posterior 

 supraoculars surrounded with granular scales." This seems tovbe 

 the only real difference in their scutation. 



Coloration: — Dorsal surface olive-gray tinged with bluish; on each 

 side a broad stripe of dark olive-gray bordered above and below by 

 narrow, pale bluish lines; several dark olive-gray spots on. the back; 

 head, thighs, and tail tinged with brown dorsally; the head varying 

 to a fleshy color on the sides; dorsal surface of thighs and tail faintly 

 reticulated with black, and spotted with pale olive-gray; ventral 

 surface milky varying to pale blue on the sides; the outer ventrals 

 spotted with pale turquoise-blue. 



Remarks: — The description was made of an adult male that meas- 

 ured one hundred and twenty-eight millimeters from snout to vent. 



Habitat: — Three adult males from the Santa Marta Mts. were 

 examined, but this race is probable widely spread over the north of 

 Colombia. 



Ameiva ruthveni, sp. nov. 



Description: — Adult male; Type M. C. Z. 9931. Panama (near- 

 city); 1904; W. W. Brown, Jr. 



