Ar'1'. XXVI. — Preliminary Notice of certain Nezv Species 

 of Lizards fro)u Central Australia . 



By A. H. S. Lucas, M.A., B.Sc, aud C. Frost, F.L.S. 



[Kead 13th December, 1804.] 



The following contains a description of five new species and 

 one new variety of lizards collected in Central Australia during 

 the visit of the Horn Expedition. The full descriptions, accom- 

 panied by figures, together with a complete report, will be 

 published in the volume dealing with the work of the Expedition. 



Ebenavia horni, sp. no^■. 



Description. — Head long, depressed ; snout rather obtuse, 

 about as long as the distance between the eye and the 

 ear-opening. Pupil vertical. Ear-opening small, round. Limbs 

 short and slender. Tail depressed, constricted at the base. 

 Digital expansions twice the diameter of the digit. Lamellii- 

 under the fourth toe eight, separated from the expansions by 

 rows of granules. Dorsal surfaces of expansions scaled as in 

 Phyllodactyliis. Upper surfaces of body covered with uniform 

 small, oval scales ; scales on the head round, smallest on the 

 occiput, largest and flattest ,on the snout. Rostral very low, 

 four-sided, four times as broad as high. Nostril pierced between 

 first labial and three or four nasals ; first nasal largest, separated 

 from its fellows on the opposite side by a single equal scale, thus 

 forming a line of three scales behind the rostral. Nine upper 

 labials. Mental narrow, triangular, about as large as adjacent 

 lower labials ; latter nine in number. No special chin-shields, 

 but the gular scales near the symphysis larger than those behind. 

 Ventral scales smooth, tesselated, larger than dorsal. Tail with 

 annuli of small smooth scales. Colour. — Olive-brown above, 

 with foui- longitudinal dark bands, two converging from the 

 occiput to unite over the sacrum, and one on ejich side passing 

 fi'om the nostril through the eye and above the limbs. On the 

 side another dark band from ear, just above the fore-limb to the 



