1886.1 ^ [Cope. 



Char. Specif. Form slender. Tail moderately long, with obtuse ex- 

 tremity. Scales scincoid, with rounded edges, everywhere'equal, includ- 

 ing the preanal region. Color brownish flesh-color. 



The head is distinguishable from the body by its slightly greater width, 

 and is slightly contracted at the position of the orbits, and continued as a 

 distinct muzzle. The body is cylindrical, and the tail is a little longer 

 than one-fourth the total length. Twenty longitudinal series of scales. 

 The area represented by the rostral plate of Acontias, is invaded on each 

 side by two labial plates, and a large loreal above them. Behind the 

 second labial plate is a very small third, and above it is a large ocular 

 plate which extends upwards and forwards to a line with the superior 

 border of the loreal. The pale spot which 'represents the eye is situated 

 in the lower posterior corner. The fourth and last labial is a little larger 

 than the second, and lias a narrowly rounded posterior extremity. Above 

 it is a small postocular, which is in contact with the posterior frontal. On 

 the summit of the head there are three scuta. The anterior, or anterior 

 frontal is the smallest. It forms a transverse band between the loreal 

 and ocular of one side and those of the other. Tlie succeeding plate, 

 the postfrontal, is the largest. It is succeeded by the parietal, which is a 

 transverse plate, concave in front and convex posteriorly, and which is 

 separated from the postocular on each side by a single scale. Posterior to 

 this scute, the scales of the body commence. 



There is a large symphyseal plate wliich is a triangle with its apex pos- 

 terior and truncate. It is bounded on each side by a very large inferior 

 labial, which is also a triangle. This is followed on the labial margin by 

 two very small labial plates. A small body scale succeeds the symphyseal, 

 and this is connected with the small posterior labials by a narrow plate on 

 each side. These are followed by the body scales. Six laterally imbrica- 

 ted scales bound the vent in front. 



Total length, M. .170 ; length of tail, .045 ; of head, to line connecting 

 rictioris, .0041. 



The rostral, loreal and anterior two labial scuta are marked with minute 

 papillae, which' when removed leave pnnctiform impressions. They are 

 not very closely placed. From near Jalapa. 



Ophidia. 



Rhabdosoma semidoliatum D. & B. Misantla. 



Adelphicus quadrivirgatus Jan. Jicaltepec. 



As Dr. J. G. Fischer remarks, Rhegnops Cope is identical with Adel- 

 phicus Jan. 



Tantilla calamarina Cope. Teziutlan. 

 Henicognathits, sp. Jicaltepec. 

 Rhadin^a proterops Cope. Teziutlan. 

 Rhadin^a decorata Gthr. Jicaltepec. 



