THE HERPETOLOGY OF HISPANIOLA 211 



small spots on the occiput; sides of head with three dark vertical 

 stripes, the first reaching diagonally backward from the anterior 

 corner of the eye, the second from beneath the center, and the last 

 from the posterior corner of the eye. This species keeps its juvenile 

 pattern throughout the adult stage. Our smallest specimen, 

 U.S.N.M. No. 80863, in which the head and body together measure 

 32 mm., has the same pattern as does No. 80843, which is 108 mm. 

 long, except that the white lateral stripe is relatively much lighter in 

 the young, and the dark markings are also everywhere more definite. 



Variations. — There is singularly little variation in this, the largest 

 of the Hispaniolan Leiocephali. There are always five fairly large 

 supraocular shields, with one or two somewhat smaller ones in addition. 

 The two pairs of parietals are nearly equal in size, and both are a 

 little larger than the interparietal. The frontals usually are in 

 contact for at least their posterior half; in No. 59105, however, they 

 are completely separated by a single row of small scales. The pre- 

 frontals do not touch the canthals except in rare instances. There 

 are always three pairs of prefrontals between the internasals and the 

 supraoculars. The internasals in almost all cases have divided, 

 sometimes across, sometimes longitudinally; the cotype is unusual in 

 having a single pair of large internasals. Occasionally the foremost 

 of the median series of azygous scales lying between the prefrontals 

 will touch the rostral, but usually the inner prefrontals are in contact 

 and prevent it from doing so. The projecting scales in front of the 

 ear are usually conspicuous, as are the semitubercular enlarged scales 

 there. The patch of two or three enlarged scales on the fold directly 

 in front of the shoulder is evident in all the specimens. This character 

 does not appear in other species of Leiocephalus from Hispaniola. 



In coloration great uniformity prevails. The juvenile pattern is 

 retained in males and females alike even in the largest adults, with 

 only a slight diminution in intensity. The males do not lose the 

 reticulation on the throat, as do the males of other species in which 

 the throat becomes a uniform gray or black in maturity. In the 

 young, which usually have a more highly contrasted pattern than 

 do the adults, the lateral series of white oval spots extending from the 

 ear and above the shoulder to the groin stands out from the surround- 

 ing dark areas with a rather startling brilliance. 



The most careful inspection fails to reveal any differences between 

 the lizards from lie a Vache and those from the neighboring peninsula 

 of Haiti. The separation has evidently been too recent, or the 

 stability of the species too great, to have allowed the formation of 

 recognizable differences as yet. 



Specimens examined. — As listed in table 36. 



