Ichnotrojjis. 191 



in contact with tlie posterior half of tlie frontal, second narrowly in 

 contact with the frontal ; 4 superciliaries, first very large ; a series of 

 gianular scales between the supraoculars and the superciliaries. 

 Nostril between three shields ; two superposed anterior loreals ; 4 or 

 5 upper labials anterior to the subocular, which borders the mouth. 

 A large iipper temporal ; temporal scales small, uniform, keeled ; a 

 curved tympanic shield. 



Dorsal scales strongly keeled ; ventral plates in 10 longitudinal and 

 30 trans vei-se series ; 35 scales and plates round the body. Preanal 

 region with small scales. 



Greyish In-own above ; a white black-edged lateral stripe originating 

 on the suboeuhir, passing above the arm but not reaching the hind 

 limb ; transverse black spots on the sides and two series of similar 

 markings along the back ; ventral plates white, edged with grey, those 

 of the two outer rows dotted with brown. 



Total length 135 miHim. ; tail 77. 



Habitat. — Abu, Uelle, Belgian Congo. — The type is preserved in 

 the American Museum of Natural History, New York. 



6. ICHNOTROPIS SQUAMULOSA. 



Ichnotropis sqiiamnlosa, Peters, Mon. Berl. Ac. 1854, p. 017, and 

 Reise Mossamb. iii, p. 49, pi. viii, fig. 2 (1883) ; Bouleng. Cat. Liz. 

 iii, p. 79 (1887) ; Boettg. Ber. Senck. Ges. 1894, p. 89 ; Tornier, 

 Thierw. O.-Afr., Kriechth. p. 39 (1897) ; Sternf. Sitzb. Ges. Naturf. 

 Fr. Berl. 1911, p. 247, and Mitt. Zool. Mus. Berl. v, 1911, p. 417 : 

 Nieden, Mitt. Zool. Mus. Berl. vii. 19] 3, p. 78. 



Head and body moderately depressed. Head 1^ times as long as 

 broad, its depth equal to the distance between the anterior corner or 

 the centre of the eye and the tympanum, 3| to 4^ times in length to 

 vent in males, 4-| times in females ; snout pointed, as long as the post- 

 ocular part of the head, with sharp canthus and concave loreal region ; 

 a deep concavity along the upper surface of the snout and the frontal 

 shield, bordered by two strong keels ; a strong keel below the eye. 

 Pileus twice as long as broad. Neck as broad as or a little narrower 

 than the head. The hind limb reaches the shoulder or the ante- 

 humeral fold ; foot as long as or a little longer than the head ; digits 

 feebly compressed. Tail nearly twice as long as head and l>ody. 



Upper head-shields with granular rugosities, keels, and radiating 

 striae ; nostril between three shields ; nasals forming a suture behind 

 the rostral ; frontonasal as long as broad or a littler broader than 

 long, longitudinally divided into two ; prefrontals longer than broad, 



