174 



ON THE REPTILIA OF PERU. 









M. 



Total length 190 



Length to vent ....... 







.093 



" to axilla ...... 







.039 



" to ear ....... 







.023 



" to orbit ........ 







.008 



" of hind limb ...... 







.052 



" of hind foot ....... 







.023 



Width of head behind 







.021 



This species varies considerably in coloration, presenting the following varie- 

 ties : — 



I. Bright green, paler posteriorly, with two rows of large transverse black 

 bars with irregular edges. Head brown above, pale speckled, lower surfaces olive. 

 One specimen. 



II. Olive-brown above, with faint darker cross-bands, pale bordered behind ; 

 sides and below blue to whitish ; three specimens. 



III. Light brown with a row of black spots on each side, divided by a longi- 

 tudinal pale band. Below yellowish, marbled with bluish ; one specimen. 



All the specimens are from the elevated Lake of Titicaca, Peru. 



NYCTISATJRA. 



33. Phtllodaottltjs in^equalis, Cope, sp. nov. 



Scales of back and sides subequal, the former of unequal sizes, but without 

 elevated or keeled tubercles. Ventral scales larger, subround, smooth ; those 

 bordering the vent in front smaller. Muzzle with convex scales larger than those 

 on the occiput. Labials to below the pupil, six above ; below five, followed by 

 three others ; the inferior first three are the larger. Mental scutum longer than 

 wide, angulate behind, with an oval scute on each side of the angle, which meet 

 by an angle each on the middle line. Behind these are round scales from which 

 others graduate into the granules of the throat. Meatus auditorius a very small 

 slit. Eye contained nearly twice in length of muzzle. The fore limbs extended 

 reach the front of the orbit ; the hind limbs extend to the appressed elbow. 

 Scales of the normal tail square, and flat above; rounded and a little larger below. 



Above yellowish, with seven blackish cross-bands from nape to groin, some- 

 what connected by oblique and longitudinal lines on the sides. A dark band from 

 nostril through eye to shoulder. Limbs and tail cross-banded. Head with a 



