294 BULLETIN 17 7, UNITED STATES NATIONAL MUSEUM 



"Dimensions. — Head and body, 84 mm.; tail, 230 mm. 



"Coloration (in alcohol). — Tail, ventral plates and under side of 

 limbs brilliant cerulean blue; throat, chin, labials and point of snout 

 rosy pink; dorsal surfaces uniform dull bluish-gray, without any light 

 spots or lines whatever, but showing a bronze iridescence on shoulders 

 and on base of tail; a dusky band beginning indistinctly on the can thus, 

 passing over the ear and above the shoulder, broadening and becoming 

 black on the sides, narrowing above the insertion of the hind leg and 

 fading out on the sides of the tail ; the outer two rows of ventral plates 

 black anteriorly. 



"Variation. — The only additional specimen of this species was col- 

 lected at the same time and place. It is somewhat mutilated, but 

 shows precisely the same coloration as the type. The only essential 

 differences are that the paratype has five lower labials to a point be- 

 neath the center of the eye, and that the first pair of chin-shields is 

 divided transversely into two, the wedge of granular scales on the chin 

 extending thus only to this second pair of chin-shields. On the para- 

 type the post-brachial plates are a little more pronounced than in the 

 type specimen. The head and body length is exactly the same as 

 that of the type. The tail is defective. 



"Relationships. — While Ameiva barbouri is more clearly related to 

 A. taeniura than to any of the other Hispaniolan Ameivas, they are 

 not very close. The new species has a much longer snout, which 

 becomes much narrower towards the tip when viewed from above; 

 the brachials and ante-brachials are not continuous; the post-brachials 

 are less well developed, and finally, the third supraocular is fully in 

 contact with the fronto-parietal. Ameiva taeniura, on the contrary, 

 has a shorter and blunter snout; the brachials and ante-brachials are 

 continuous; the post-brachials are relatively larger, while the third 

 supraocular is partially cut off from the fronto-parietal by granules. 

 While the two species are alike in having an immaculate bluish-gray 

 mid-dorsal region, the black lateral bands of A. taeniura are sharply 

 marked off by a narrow light line above and below, and the central 

 portion of the black band contains numerous light spots. 



"In A. barbouri, the black band merges gradually into the dorsal 

 and lateral ground-color, and is itself without any spots or vermicula- 

 tions whatever." 



A third example of this interesting teiid was taken by the Smith- 

 sonian-Parish Expedition on Gonave Island. It is like the type in 

 all essentials. There are 18 femoral pores on each leg; the preanals are 

 arranged precisely as in the type specimen; and there are likewise 22 

 scales in the fifteenth verticil of the tail, which is reproduced beyond 

 this point. There are four lower labials to a point below the center 

 of the eye. The head and body together measure 73 mm.; arm, 24 

 mm.; leg, 50 mm.; snout to posterior border of tympanum, 19 mm. 



