1881.] LIZARDS FROM ECUADOR. 235 



keels of the tail are stronger below than above, and the coloration 

 is quite different. 



8. EcPLEOPus (EuspoNDYLUs) GUENTHERi, sp. n. (Plate 

 XXIII. fig. 1). 



Form slender and elongate. Head rather narrow, not constricted 

 at the nape, muzzle rather long. Internasal plate large, longer than 

 broad, rounded in front, followed by two large, irregular, four-sided 

 fronto-nasals extensively in contact on their inner or smaller side ; 

 frontal, two fronto-parietals, and large moderately broad and long 

 interparietal, two wedge-shaped parietals ; two occipitals behind the 

 interparietal, smaller outer occipitals and paroccipitals above the 

 temporal region, the shields of which are polygonal and large. 

 Nasal large, triangular, with the nostril in the middle ; frenal also 

 large, obliquely cut off posteriorly by the first and largest of a series 

 of rather large infraoculars. Supraorbitals four. Supralabials six, 

 not elongate; infralabials five, the first unusually smaller and wedge- 

 shaped. Symphysial very large ; single mental followed by two pairs 

 of large contiguous postmentals ; a third with their points almost 

 meeting, and a wide concavity behind occupied by the gular scales, 

 of which there are three rows before the minute gular collaret, and 

 seven between this and the last gular series of eight narrow and long 

 shields which form the collar. All these series are continuous with 

 those of the nape, forming complete rings of smooth quadrangular 

 plates, there being no granular space on the neck, and only a limited 

 space covered with small or minute, but not granular, scales at the 

 shoulder and fore part of the side. Back with cross rows of elongate 

 quadrangular smooth shields, about fourteen or fifteen in each row. 

 Small or minute lateral shields of the same type run up between the 

 dorsal rows. Thirty-four transverse dorsal rows from the occiput to 

 the root of the tail. Ventral shields elongate, quadrangular, smooth, 

 in ten longitudinal series (counting the smallest external ones in the 

 middle of the body), in twenty-one transverse rows from the collar to 

 the anal region. Prseanal plates two large anterior, five long posterior 

 ones. Tail with the dorsal and ventral scutellation. Limbs covered 

 almost entirely with large smooth plates, leaving only a very limited 

 space occupied by small scales on the posterior surfaces. Femoral 

 pores eight. Fore limb reaching to front of eye ; third and fourth 

 toes equal. Hind limb reaching three fourths of the length of the 

 side ; fourth toe the longest. The inner toes are well developed on 

 both fore and hind feet. 



Ground-colour of the entire dorsal surface uniform pale brown, 

 with dark bars and spots disposed as follows : — Each of the shields 

 on the upper surface of the head has one or more round blackish 

 spots ; eight broad transverse bars on the back between head and 

 root of tail ; the bars are continued at equal intervals on the tail, 

 diminishing to mere spots towards the end. Lower surface of body 

 and tail yellowish, also with round blackish spots, generally one on 

 each plate on the anterior portions (the gular and labial regions in 

 particular) being large, variegated with the dark colour, distinct bars 



