SYSTEMATIC ACCOUNT OF THE SPECIES. 173 



Colour (faded alcoholic specimen): — Brown above with two series of 

 black dots on each side of the middorsal line; sides with a darker brown band 

 from cheek to groin bordered above with scattered light specks and below by a 

 conspicuous white line; lower surfaces whitish. 



Measurements: — Total length 125 mm. 



Tip of snout to vent 53 mm. 



Vent to tip of tail 72 mm. 



Greatest width of head 9 mm: 



Tip of snout to ear 11 mm. 



Fore limb 20 mm. 



Hind limb 33 nrni. 



Boulenger (Cat. lizards B. M., 1885, 2, p. 163) made this species a synonym 

 of Leiocephalus vittatus ( = cubensis) , a course followed by the senior author 

 when no specimens were at hand (Mem. M. C. Z., 1914, 44, p. 301). Stej- 

 neger (Proc. U. S. N. M., 1917, 53, p. 274) maintains that raviceps is a distinct 

 species and ha\dng now one of the types in the M. C. Z., we agree that it is surely 

 distinct. We feel, however, that its being Cuban is by no means so certain. 

 Wright collected most if not all his reptiles at Monte Verde, an old coffee planta- 

 tion in the Sierra de Yateras. This region has been worked for many years by 

 the junior author, but neither he nor any other collector has succeeded in finding 

 the species here or elsewhere in Cuba. Throughout its entire range, the genus 

 is by reason of its habits rather conspicuous and easy to collect. Stejneger 

 points out that its true relationships are with L. loxogrammus; we have compared 

 M. C. Z. 10,928, with a type of loxogrammus M. C. Z. 10,931 and with three other 

 specimens of the species, M. C. Z. 6,230, all from Rum Key. They are much 

 alike but not identical, the posterior of the two pairs of prefrontals being still 

 much larger in the latter than in raviceps. All things considered, it is by no 

 means impossible that the types of raviceps came from some one of the Bahamas 

 and were credited to the Wright collection from Cuba by mistake. 



48. Leiocephalus macropus Cope. 



Plate 10, fig. 5. 



Bayoyai Arrastrapansa. 



Diagnosis: — An iguanid lizard which carries its tail coiled over its back 

 while running, with smooth ventral scales and having an area of fine granular 

 scales posterior to the ear opening. 



