REPTILIA. 
By A. H. S. LUCAS, M.A., B.Sc., and C. FROST, F.L.S. 
(Plates 8, 9, 10, 11, 12). 
I. — LACE RT ILIA 
Introduction. 
Geographical Distribution. —The assemblage of forms collected includes the 
following groups :—(1) A series of what must at present be considered as species 
purely Eremian (Tate) ; (2) a series of species characteristic of Northern 
Australia; (3) a series of species characteristic of Western Australia; and (4) 
a number of species which are distributed generally over all Australia. 
The Eremian group comprises the new species Ebenavia horni, Ceratnodactylus 
dantceus, Diplodactylus byrnei, Tympanocryptis tetraporophora, Diporophora win- 
neckei, Varanus eretnius, V. giileni, Rhodona tetradactyla. 
The Northern species are Heteronota bynoei, Nephrurus asper, N. Iccvis, 
Diplodactylus ciliaris, Physignathus longirostris, Varanus giganteus, V. punctatus, 
V. acanthurus, and Hinulia fasciolata. 
The W^estern species include Amphiholurus maculatus, A. imbricatus, A. 
reticulatus, Moloch horridus, Egernia stokesii, Rhodona gerrardii, R. biges, Able- 
pharus greyi, while Amphibolurus pictus, Tiliqua occipitalis and Tympanocryptis 
lineata extend through the southern colonies as far east as western Victoi’ia. 
The species widely spread over Australia are Gehyra variegata, Lialis 
burtonii, Delma fraseri., Amphibolurus barbatus, Varanus gouldii, Egernia ivhitii, 
Hinulia lesueurii, with H. tceniolata, Ablepharus boutonii and A. ilineo-ocellatus). 
Variation .—The collection has proved of great interest in consequence of the 
great amount of variation which occurs amongst the individuals of many amongst 
the species, notably Nephrurus Icevis, Heteronota bynoei, Amphibolurus maculatus., 
A. imbricatus, A. reticulatus, A. pictus, A. barbatus, Physignathus longirostris, 
Egernia ivhitii and Hinulia lesueurii. The colour variations are most conspicuous, 
but of equal importance are the variations in the number of pneanal and femoral 
