8. LyGosoma. 335 
146. Lygosoma gerrardii. (Pare XXVIL. fig. 3.) 
Rhodona punctata, var. gerrardii, Gray, Proc. Zool. Soc. 1864, p. 296, 
—— gerrardii, Giinth. Ann. § Mag. N. H. (8) xx. 1867, p. 46. 
Body much elongate; limbs very weak, anterior mono- or 
didactyle, posterior didactyle; the distance between the end of the 
snout and the fore limb is contained nearly three times in the 
distance between axilla and groin. Snout subcuneiform, with 
slightly projecting labial edge. Eye very small. Lower eyelid 
with an undivided transparent disk. Nostril pierced in a large 
swollen nasal, which is in contact with or narrowly separated from 
its fellow; frontonasal much broader .than long, forming a broad 
suture with the frontal; preefrontals small and widely separated ; 
frontal much broader than the supraocular region, in contact with 
the first and second supraoculars and with the interparietal ; supra- 
oculars three, small, second largest; five supraciliaries; fronto- 
parietals small, smaller than the interparietal; parietals forming 
a suture behind the interparietal ; three pairs of nuchals; fourth 
upper labial entering the orbit. ar-opening scarcely distin- 
guishable. 20 smooth scales round the middle of the body; dorsals 
largest. A pair of enlarged preanals. Fore limb about as long as 
the snout, hind limb as long as the distance between the commissure 
of the mouth and the fore limb; second toe more than twice as long 
as first. Tail thick, as long as head and body. Yellowish above, 
with three dark brown bands; lower surfaces white. 
millim. millim. 
Total length ...... 134 Fore limb ........ 35 
Head: osyansi-vag 9 Hind limb........ 11 
Width of head .... 6 Pats eecscean egy 67 . 
Body'viae evev ae es 58 2 
Western Australia. . 
a, Ad. Swan River. : (Type.) 
6. Ad. Champion Bay, N.W. Australia. Mr. Duboulay [C.]. 
. 147. Lygosoma punctatovittatum. 
Rhodona punctatovittata, Giinth. Ann. & Mag. N. H. (3) xx. 1867, 
47. . 
pial officeri, McCoy, Prodr. Zool. Victoria, dec. vi. pl. li. 
Body much elongate; limbs very weak, anterior monodactyle, 
posterior didactyle; the distance between the end of the snout and 
the fore limb is contained more than three times in the distance 
between axilla and groin. Snout subcuneiform, with slightly pro- 
jecting labial edge. Eye very small. Lower eyelid with an 
undivided transparent disk. Nostril pierced in a large swollen 
nasal, which forms a suture with its fellow; frontonasal much 
broader than long, forming a broad suture with the frontal; pra. 
