136 BULLETIN 17 7, UNITED STATES NATIONAL MUSEUM 



The coloration of this species is exceedingly constant. The dark 

 metallic head and back are well accented by the brilliant light lateral 

 stripe. Practically every specimen has the dark temporal bar. A 

 few specimens have a row of spots continuing behind the lower 

 labials for a short distance along the throat. Some have more or 

 less of the light brown vermiculations on the lateroventral area. 



Relationships. — On the whole this dainty and elegant lizard seems 

 to be one of the stablest in its characters of all the great Anolis group. 

 Its nearest relative appears to be olssoni, more coarsely scaled and a 

 little larger than semilineatus but obviously of the same group. 



Boulenger's figure of the type of Anolis semilineatus is not suffi- 

 ciently clear to distinguish it from olssoni. Being in doubt as to 

 which of the two Hispaniolan lizards should receive the name of 

 semilineatus, I sent a pair of each species to the British Museum for 

 comparison and received a reply from H. W. Parker under date of 

 June 2, 1928: "I have compared your four specimens of Anolis with 

 the type of Anolis semilineatus and as a result of my comparisons 

 have no doubt that your specimens 74938 and 74939 [from Rio San 

 Juan, Dominican Republic] belong to the same species. The meas- 

 urements of the type [of semilineatus] for which you ask are: Tip of 

 snout to posterior border of ear, 11.5 mm.; posterior border of ear to 

 vent, 27 mm.; vent to tip of tail, 103.5 mm. This figure is one larger 

 than that given in Boulenger's Catalogue, but as the tail is detached 

 from the specimen there is always a possibility of error in measuring 

 such an object. I find that as well as the type we have one female 

 of semilineatus and, in addition, referred to the same species by 

 Boulenger, 3 males and 2 females of the other species represented in 

 the specimens you sent us, i. e., the species with the larger gular 

 scales and the dark interstitial skin of the gular fan. The locality 

 will not help you much, I am afraid; it is just Hayti." 



Specimens examined. — As listed in table 23. 



Table 23. — Specimens of Anolis semilineatus examined 



