Ichnotfopis. 181 



B. Two superposed anterior loreals ; upper head-shields 

 strongly striated ; frontonasal not broader than long. 



I. chapini, Schnaidt, p. 190. 

 II. Frontonasal longitvidinally divided ; subooular not bordering 

 the mouth ; occipital usually absent ; 46 to 58 scales and 

 plates round middle of body; 13 to 16 femoral pores on 

 each side . . I. squaviidosa, Peters, p. 191. 



1. ICHNOTEOPIS TANaANICANA. 



Ichnotropis tangatiicana, Bouleiig. Ann. & Mag. N. H". (8) xix, 

 1917, p. 278. 



Head and body feebly depressed. Head If times as long as broad, 

 its depth equal to tlie distance between the centre of the eye and the 

 tympanum, its length 34 times in length to vent ; snout obtusely pointed, 

 as long as the postocular part of the head, with rather strong canthus 

 and feebly concave loreal region ; a feeble concavity on the upper 

 surface of the snout and the anterior half of the frontal ; a feeble keel 

 below the eye. Pileus 2i times as long as broad. Neck narrower 

 than the head. The hind limb reaches a little beyond the shoulder ; 

 foot a little longer than the head ; digits feebly compressed. 



Upper head-shields rather feebly striated ; nostril between three 

 shields ; nasals forming a suture behind the rostral ; frontonasal as 

 long as broad ; prefrontals longer than broad, in contact with the 

 second supraocular ; frontal as long as its distance from the rostral, 

 nearly twice as long as broad, a little narrower behind than in front ; 

 parietals longer than broad, rounded behind, in contact with the third 

 supraocular ; interparietal a little larger than the frontoparietals, 

 in contact with a small and rather irregular occipital, which projects 

 beyond the parietals. 4 supraoculars, first and fourth small ; 4 

 superciliaries, first longest and forming a very oblique suture with 

 the second, its inner border entirely in contact with the first and 

 second supraoculars ; fourth superciliary in contact with the third 

 and fourth supraoculars ; 3 or 4 small granules between the second 

 and third superciliaries and the supraoculars. Lower nasal narrowly 

 in contact with the rostral ; anterior loreal shorter than the second ; 

 4 upper labials anterior to the subocular, which is a little narrower 

 beneath than above and broadly borders the mouth. A large upper 

 temporal, forming a suture with the fourth supraocular; temporal 

 scales rather large, hexagonal, feebly keeled ; a narrow tympanic 

 shield. Lower eyelid with a series of vertically enlarged scales in the 

 middle. 



5 pairs of chin-shields, the 3 anterior in contact in the middle; 



