Laiastia. 19 



1. Lengtli to vent (in niilliinetres). 2. Scales across middle of body. 3. 

 Transverse series of ventral plates, -i. Plates in collar. 5. Gular scales in a 

 straig-ht series between the symphysis of the chin-shields and the median 

 collar-plate. 6. Femoral pores (right and left if differing in nximber). 7. 

 Lamellar scales under fourth toe. 8. Upper labials anterior to the subocular. 



This explanation applies also to the tables giveu for the other species 

 of the genus. 



Habitat. — This species was orifiiually described from two male 

 specimens from Nyassaland, altitude about 2000 metres, presented to 

 the British Museum by Sir Harry Johnston. It has since been 

 recorded ))y Sternfeld from Portuguese East Africa. I have recently 

 examined 16 specimens collected by Mr. A. Loveridge at Morogoro in 

 ex-German East Africa. This series shows that the lizard from 

 Southern Rhodesia which I described as L. hirdwelli cannot be 

 regarded as more than a colour-variation of L. johustonii. 



2. LATASTIA SIEBENROCKI. 



Eremias aiebenrocki, Tornier, Zool. Jahrb., Syst. xxii, 1905, p. 386. 

 Laiastia sie6e/(rofA-/, Nieden, Mitt. Zool. Mus. Berl. vii, 1913, p. 77. 



Apparently closely allied to L. johnxtuiiii and similar to it iu the 

 shields round the nostril. Snout elongate and rather pointed. Hind 

 limb reaching the axil. 



Frontonasal alwut as long as broad or broader than long ; frontal 

 lougitudinally grooved ; interparietal about twice as long as broad, 

 sometimes separated from the occipital by a small shield. 4 supra- 

 oculars, all in contact with the frontal ; 6 superciliaries. 5 upper 

 labials anterior to the subocular, which is but little narrowed iuferiorly. 

 Two elongate uj)per temporals ; temporal scales granular, lower 

 larger ; a large tympanic shield. A gular fold ; collar even-edged, 

 composed of 8 plates. 



Dorsal scales narrow, sharply keeled, 40 to 48 across the middle of 

 the body. Ventral plates iu 8 longitudinal series, outer small, median 

 pair not narrower than the others ; 28 to 32 transverse series. Two 

 large preaual plates, one iu front of the other. 10 to 14 femoral 

 pores on each side. Caudal scales all strongly keeled. 



Brown above, with darker streaks bearing black transverse spots ; a 

 white streak from the outer corner of the parietal to the base of the 

 tail, where it unites with its fellow ; two white lateral streaks, the 

 upper from the eye, touching the upper border of the ear-opeuiug, to 

 the tail, the lower, from the upper lip to the thigh, passing above the 

 shoulder. 



