01 PROCEEDINGS OP THE ACADEMY OF 



by a black band. A third and inferior pale line is sometimes seen on the side, 

 a space above the margins of the external abdominal plates. The latter with 

 the femora and tibia? are sometimes spotted with whitish upon a dark ground. 

 Beneath yellowish white. Total length 10 in. 6 lin. ; head and body 3 in. 



Hab. Hayti, (near Jeremie.) Mus. Compar. Zoology Cambridge, No. 1503.) 

 Acad. Philada. 



This species is intimately allied to the A. 1 i n e o 1 a t a D. & B., also an inhabi- 

 tant of Hayti. The latter is peculiar in having shields upon the superior pos- 

 terior fore-arm, and in its keelless tail plates. In t a? n i u r a these keels are weak. 

 The coloration of 1 i n e o 1 a t a is different from that of the present species. 

 Our group A, of which A. p ul c hra may be regarded as type, is connected with 

 B, A.surinamensis type, through this species in the former group, and A. 

 polops in the latter. The five occipital plates, elongate form, and pattern 

 of coloration, are indications of this in the taniura. 



II. Scales of the caudal whorls smooth superiorly. 

 A. 1 i n e o 1 a t a Dum. et Bibr., Erpetol. Gen. v. p. 119. 



Nostril pierced in the nasal plate. One anterior series of seven plates upon 

 the brachium, several posterior series, replacing the granules which exist in 

 other species. Two anterior antebrachial series. Postbrachial or elbow plates 

 present, rhombic. Five series of inferior femorals, two of inferior tibials. 

 Three large preanals surrounded by smaller scales. Fifteen femoral pores. 

 Head above brown, laterally varied with black and white. Superior regions 

 of body black with nine longitudinal lines, the median dorsal double at the 

 middle of its length. Of the lateral lines, one is from the occiput, one from the 

 supercilium, one from the eye, one from beneath the tympanic orifice. Irregular 

 white lines upon the arm and the posterior foot. A light posterior femoral 

 band continuous with one on the tail: the latter member with other indistinct 

 longitudinal bands. Total length (?young) 9 in. 7 lin.; body 2 in. 2 lin. 



Hab. Hayti. 



B. 



I. Three rows of tibial shields, two appearing on the inferior face. 



a. Frontal plate one : no palatine teeth. 



b. Three supraorbitals ; premaxillary teeth ten. 



A. thoracica Cope. 



Anterior and superior temporal and postoccipital regions irregularly squamous. 

 Five marginal supraoculars, second longest. Nostril in the nasal plate. Median 

 gular scales minute; those of the mesoptychium larger, in six rows. Three 

 (two small, one large) antebrachial series, scarcely continuous with brachial 

 row. Postbrachials small in three short rows. Femoral plates numerous ; 

 eighteen femoral pores. External tibial plates seven, very wide, second, third 

 and fourth largest, third broad, fourth narrow, transverse. External digit 

 extending beyond extremity of internal. A slight tendency to acumination in 

 the heel scales of some specimens. Preanals a series of three or four large 

 marginal, one or two large median, longitudinally arranged. Color above 

 brown tinged with olive. Two indistinct light bands the superior from the 

 supercilium, the inferior from the superior margin of the auricular opening 

 enclose a black band, which is continued some distance upon the base of the 

 tail, with its inferior light border. Beneath greenish or yellowish white, the 

 pectoral and gular regions more or less black. The female differs in having 

 the brown of the back lighter and marked with a narrow median line. The 

 black upon the throat is also sometimes wanting. The size is much less, being 

 in total length 9 in. 2 lin. ; of head and body 3 in. The male, 15 in. ; head 

 and body 4 in. 6 lin. 



Hab. New Providence Island, Bahamas. Mus. Philada. Acad. (Dr. H. C. 

 Wood, Jr., Coll.) Salem, Mass. 



[Feb. 



