KAST AFRICAN LIZAHPS. 955 



Cerhuosaurus nigrolineaxus Hallow. 

 Blgr. Cat. Liz. iii. 1887, p. 122. 



Three specimens available for the present paper, though others 

 were taken alive or seen at Frere Town, Djir es Sitlnaiu, Mbahv, 

 ICilosa, Kidai, and Ildkuj'u. This species is not nearly so abundant 

 at Kilosa !is at Morogoro, for which it is didicult to assign a 

 reason, as the type of country is similar. 



In my last notes I assigned tliese lizards to G. Jlmngularis 

 Jlavigularis, following Schmidt's rtiling of its being the eastern 

 geographical race, Avhile he called the western G. f. nigrolineaius , 

 though I pointed out that many of my .specimens conformed with 

 G.nigrollneatiis rather than G. Jlavigularis. Mi.*s Procter demni'S 

 to my referring the three specimens under consideration to G. 

 flavigidaris, and points out a striking diderencc not mentioned by 

 Schmidt. In G. Jlavigularis the laterals are sn\ooth and the 

 dorsals only feebly keeled, but in G. nigrolineaius the laterals 

 are keeled and the dorsals so strongly keeled as to form almost 

 continuons ridges along the back, 



A young male was taken on 5. vii. 21 which measured 10^ inches 

 (90 4-174). Another ma,le, total length 20]- inches, had an excep- 

 tionally long tail 14^- inches (145 4-365). The tail is therefore 

 two and a ha.]f times the length of tlie head and body as against 

 two times as given in the Catalogue. 



The points in which this specimen differs from " flavigularis"' 

 of the Catalogue are: — Head-shields faintly keeled and pitted. 

 Frontonasals widely separated from frontal l)y broad suture of 

 the pra^-frontals. Lateral scale.? quite distinct!}' keeled. Femoral 

 pores 16-15. I might add tha.t thei-e a.re 22 longitudinal and 58 

 transverse rows of dorsals. Yentrals in 8 longitudinal rows. 



The coloration of the living lizard is very handsome. General 

 colour above nut-brown, A yellow vertebral line, bordered by 

 black lines, commences two scales behind the ])arietals and con- 

 tinues three-quarters of the way along the tail, A series of 

 black spots along the back between the vertebral and dorsal lines. 

 Sides scarlet, alternalo scales being brown and yelUny so as. to 

 foi'm vertical stripes. Under suiface ])ure white. 



For several days in succession I had seen this .specimen disa])pear 

 into a burrow a,t the base of a bush ; it had only come to occupy 

 the burrow quite recently, as I passed the spot four times daily. 

 Apparently it had cleaned out the bun-ow before occupying it^ 

 as my attention was first attracted by the heap, and little slidd,. 

 of fresh earth at the entrance. Thinking that it might be laying 

 in the hole, I got my native collector t() make a snare at the 

 Entrance of the burrow which twice caught the occnpajit, but 

 it wriggled free. The laborious process of digging it out was 

 therefore resorted to, and the burrov/ found to be over a yard in 

 length with two smaller blind alleys opening off it. 



Grasshoppers and manj' termites in stomach of an Ikikuyu 

 male. 



