236 Dr. A. Giintlier on new Species of 



behind, and not in contact with the central occipital ; two 

 pairs of occipitals, of which the posterior is the larger ; four 

 superciliaries ; postnasal and loreal nearly of the same size ; 

 six upper labials, of which the fourth is the largest, situated 

 below the eye. Front lower labial rather narrow, followed 

 by a single mentale, which is broader than long ; six lower 

 labials. 



Body surrounded by 26 longitudinal series of scales ; 

 there are 73 transverse series of scales between the men- 

 tale and the vent ; the body, therefore, is rather slender. 

 Four preanal scales, of nearly the same size. 



Fore limbs very small, reaching the ear-opening when laid 

 forward ; toes very short, the third a little longer than the 

 fourth. The hind limb and toes very short, the second and 

 fifth toes equal in length, the fourth a quarter longer than 

 the third. Upper parts uniform dark olive, lower whitish ; 

 sides and the lower part of the tail punctulated with brown. 



millim. 



Distance of the snout from the eye 4^ 



„ „ ear-opening 11 



„ „ fore limb 20 



„ „ vent t . . 83 



Length of fore limb 9| 



„ third front toe 2| 



„ hind limb 16 



„ fourth hind toe 5 



In one specimen, in which the tail is preserved, this member 

 is about as long as the rest of the body. 



Three specimens were obtained at Mpwapwa. 



Gongylus Johannce. 



Rostral shield with a straight upper margin ; supranasals 

 in contact with each other ; frontal broad, single, with a straight 

 posterior margin ; vertical large, bell-shaped, narrower in 

 front than behind, with a shallow notch in the middle of its 

 hind margin, the small central occipital fitting into the notch ; 

 one pair of occipitals. Nostrils in a notch of the rostral shield ; 

 postnasal only one fifth the size of loreal. Six upper labials, 

 the fourth not being larger than the third, and situated below 

 the eye. Anterior lower labial rather narrow, followed by a 

 single mentale, which is rather broader than long ; seven lower 

 labials. 



Eyelids scaly ; ear-opening small, round. 



Body surrounded by 33 longitudinal series of scales. There 

 are from 97 to 101 transverse series of scales between the 

 mentale and the vent ; the body, therefore, is very slender. 



