16 



DR. A. GUNTHER ON BRVZILIAN RfiPTILES. [Jail. 8, 



large. Two pairs of chin-shields ; two or three pairs of scale-like 

 shields between the chin-shields and the ventral plates. Scales 

 smooth, polished, rhombic, in fiftoen rows. Ventral shields 206-208; 



.i^caii: 



anal bifid ; subcaudals 33-4". Dr. Wucherer has found in a very 

 large specimen 181 ventral and 32 subcaudal shields. 



Specimens of 19 inches length are reddish-olive in spirits, with a 

 darker line along the vertebral series of scales. In a specimen in 

 which this line is very distinct, another similar line is to be seen 

 along each side of the body, between the fonrth and fifth outer series 

 of scales. Smaller specimens have those lines still more distinct. 

 The head and the anterior portion of the nape are brownish-black, 

 with a broad yellow band across the occipitals and temporals to the 

 side of the mouth. The lower parts are yellowish. Very large spe- 

 cimens are of a uniform bright gamboge-yellow, the head being dirty 

 light brown, gradually becoming lighter posteriorly ; there are some 

 greyish-ash irregular spots on the side of the head and under the 

 chin, and some minute irregular grey spots on the sides of the belly 

 and on the outermost rows of scales. 



The posterior maxillary tooth is grooved. 



Two specimens were taken at Ilheos ; one is 18 and one 19 inches 

 long. Another large specimen, of which a sketch has kindly been 

 communicated to me by Dr. Wucherer, is from the same place ; it 

 was captured on an open piece of ground before the house of a Cacao- 

 planter, situated some GO feet above the level of the river and per- 

 fectly dry ; its total length is 4 feet 5 inches, and the length of the tail 

 4j inches. Its habit is stouter than that of the younger specimen, 

 and it appears to me to be a female. 



Trachycyclus superciliaris. (Iguanid^.) 



? ? Pi'octotretus tcelsneri, Berthold, Gott. Nachr. 1859, p. 179. 



Occipital plate of moderate size, as large as the eye. Above uni- 

 form brownish-olive (in spirits), yellowish below, a brown band along 

 the lower side of the thigh and before the vent. 



Ilab. Bahia. 



Description. — The head is slightly depressed, of moderate width. 



