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BULLETIN 17 7, UNITED STATES NATIONAL MUSEUM 



than is the case with the Hispaniolan lizard. The coloration is so 

 varied in dominicensis that it is possible to match an occasional speci- 

 men to the lucius pattern, which seems to be considerably more stable, 

 so that both species may sometimes have essentially similar styles of 

 coloration. The large occipital plate of lucius distinctly reminds one 

 of dominicensis, although there is no preoccipital in the Cuban species. 

 The median groove on the snout, so apparent in dominicensis and its 

 close allies, is conspicuously absent in lucius, where the snout scales 

 are all more or less unifoim in size and fairly hexagonal in shape, with- 

 out any indication of repeating scale for scale to establish bilateral 

 symmetry along the snout. 



It is with distichus of New Providence and distichoides of Andros that 

 the closest relationships of dominicensis are found. 



Anolis distichus distichus Cope, of New Providence Island, is obvi- 

 ously related to dominicensis on the one hand and to lucius on the 

 other, being fairly intermediate between the two in its characters. 

 The true distichus has nearly the same head and body proportions as 

 does dominicensis, both of them readily contrasted with the more 

 elongate lucius. In adult examples of distichus there are distinct 

 keels on the enlarged scales of the femur, while in dominicensis these 

 scales are always smooth, and in lucius neither Dr. Barbour nor I have 

 ever observed them to be anything but smooth, although Dumeril 

 and Bibron speak of "des ecailles rhomboid ales, caren6es, qui revetent 

 le dessus des membres." In distichus the contact of the supraocular 

 semicircles and of the median snout scales preceding them is relatively 

 less complete than in dominicensis, there being usually but one or 

 two small interpolated scales, if any at all, in the Hispaniolan lizard, 

 while in the New Providence form there is a patch of small scales just 

 in front of the semicircles and often one or more similar small scales 

 interpolated between the semicircles, so that the midline contact 

 along the top of the head is not very continuous in its posterior half. 



Specimens examined. — As listed in table 25. 



Table 25. — Specimens of Anolis distichus dominicensis examined 



