22 Lacerfidx. 



Bluish grey in front, pale reddish lirown behind ; 3 black streaks 

 along- the nape and two on each side of the postocular part of the 

 head and of the neck, the lower passing through the tympanum ; the 

 median nuchal and the two lateral streaks continued on the body, 

 fading to reddish-brown behind. Lower parts white. 

 Measurements (in millimetres) : 



From end of snout to vent . . . .52 



„ ,, ,, fore limb . . .19 



Length of head . . . . . .13 



Width of head 7 



Depth of head ...... 4 



Fore limb ....... 16 



Hind limb 32 



Foot 17 



Tail 105 



This species is known from two male sj^ecimeus obtained by 

 Mr. Gr. W. Bury near Berbera, Somaliland (altitude under 100 m.). 

 It comes nearest to L. hoscre. 



4. LATASTLi BOSC^. 



Latastia boscai, Bedriaga, Ann. Mus. Gleuova, xx, 1884, p. 322 ; 

 Bouleng. Cat. Liz. iii, p. 56 (1887), and Ann. Mus. Genova (o) v, 

 1912, p. 330. 



Body rather depressed. Head rather strongly depressed, 1] to 

 nearly 2 times as long as broad, its depth equal to the distance 

 between the centre of the eye and the tympanum, its length 4 to 4.' 

 times in length to vent ; snout pointed, as long as postocular part of 

 head, with sharp canthus and vertical, grooved loreal region. Pileus 2 

 to 2.1 times as long as l)road. Neck as broad as head. Hind limb 

 reaching the axil or the collar ; foot 1', times as long as the head; 

 toes slender, compressed. Tail 2 to 2;] times the length of head and 

 body. 



Nostril pierced between 4 shields ; nasals forming a suture behind 

 the rostral, the suture ^ to I the length of the frontonasal, which is 

 broader than long and broader than the interuarial space ; prefrontals 

 forming a median suture ; frontal as long as its distance from the 

 rostral or from the end of the snout, 1| times as long as broad, 

 rounded in front, much narrower behind, gi'ooved in its anterior half; 

 parietal H to If times as long as broad ; interparietal 2 to 2i times 

 as long as broad ; occipital ^ or barely h as long as the interparietal, 

 from whirh it may be separated ])y a small shield. 4 supraoculars. 



