46 Oil a new Eiigjjstom2tid Frog from Namaqualand, 



is similar to that of L. longicaudata, so is the shape of the 

 posteriorly narrowed frontal shield, with truncate antero- 

 lateral angles, and the coloration, as described and figured by 

 Werner, is liighly suggestive of some examples of that species. 

 The three shields behind the nostril (" postnasals " of Werner) 

 cannot be regarded as a generic character, especially in 

 view of the well-known variability of these shields in the type 

 species of the genus Lacerta. Nor can generic importance be 

 ascribed to the scaling of the lower eyelid if we bear in 

 mind the modifications which it undergoes within the limits 



VI. — Description of a new Engystomatid Frog of the Oenus 

 Breviceps from Namaqaaland. By G. A. BOULENGER, 

 F.R.S. 



[Plate II.] 



Breviceps macrops. (PI. IT.) 



Head comparatively larger and body less gibbose than in 

 B. gihbosus and allies, eyes much larger, their diameter 6| to 

 8 times in the length of head and body ; interorbital space 

 narrow, barely half the width of the upper eyelid. Digits 

 shorter and thicker than in the other species of the genus ; 

 first and second fingers equal, twice as long as the fourth, 

 a little shorter than the third, which is not longer than the 

 eye ; toes extremely short, increasing in length from the 

 rudimentary first to the fourth^ which is not longer than the 

 third finger, the fifth as long as the second; subarticular 

 tubercles very small, very feebly prominent under the fingers, 



Lower aspect of hand and foot. 



absent under the toes ; two large, feebly prominent metatarsal 

 tubercles, the inner longer than its distance from the extre- 

 mity of the first toe. Body with small smooth warts above, 

 limbs and lower parts smooth. Pale sand-colour above, with 



