ON REPTILES COLLECTED NEAR GUAYAQUIL, ECUADOR. 91 



On the younger the light vertebral space is more distinct, 

 as also the narrow bands of darker at each side of it, in 

 which there are small black spots. On the larger the 

 color is a darker olive in which many of the scales are 

 tipped with black. Nine of the dorsal rows are keeled. 



Herpetodryas reticulatus Pet. 



A yonng specimen with 17 rows of scales, 186 ventral 

 scutes, a divided anal, and a mutilated tail. Labials 9, 

 infralabials 10, one anteorbital, postorbitals 2. ^ The 

 fourth to the sixth labials are in the orbital series. To 

 the base of the tail there are 82 blotches. Ventral snrface 

 without black spots ; no white spots or white-edged scales 

 on flanks or back. In the quadrangular blotches of the 

 back the central portions are lighter, as also of the scales. 

 This form is evidently closely allied to H. Bappii of Glin- 

 ther. 



Coniophanes signatus sp. n. 



Body slender, elongate, slightly depressed. Head 

 little wider than neck, crown flattened, snout moderately 

 pointed, loreal region concave. Scales smooth, lustrous, 

 elongate, poreless, in 19 rows around the middle of the 

 body. Ventral scutes 132, anal and subcaudals bifid, tail 

 mutilated. Rostral not bent back on the snout. Inter- 

 nasals not half as large as prefrontals, broader than long. 

 Prefrontals large, broad, bent down to the loreal. Nasals 

 two, loreal as high as long, labials 9, fourth and fifth in 

 orbit, eighth small, not as large as the loreal, longer than 

 high, seventh and ninth large, one anteorbital, two post- 

 orbitals, infralabials 10, two pairs of submentals. The 

 ^ maxillary teeth increase in size backward ; the posterior 

 one is grooved. A dorsal band of brown occupies five 

 scales, and a half scale at each side of these ; a light line 



