KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 52. N:0 3. 9 
to such a degree that the frontal forms even a broad suture with the frontonasal. 
The rostral is, as a rule, separated from the frontonasal. There is thus a consider- 
able variability in this respect, as already has been reported by Lucas and FROST.! 
With regard to their colour-pattern these specimens approach Lygosoma teniolatuwm 
in a considerable degree. From the type of the latter they differ among other things 
by having constantly in all specimens 3 upper labials in front of the subocular. 
The number of scales around the body is 28—30 (in one specimen 26). 
Considering the great variation of L. lesueuri as reported by Lucas & FROST, 
and confirmed by the above statements, it appears as if L. fischeri, which has been 
established on specimens from Nicol Bay, N. W. Australia, would fall within the 
limits of variation of L. lesueuri. 
Lygosoma isolepis Bror. — 6 specimens from various localities at St. George 
Range, the interior ot Kimberley, N. W. Australia. 
Lygosoma tympanum n. sp. — Habit lacertiform. Distance between the end 
of the snout and the fore limb only a little shorter than the distance between axilla 
and groin. Snout moderate, obtuse. Lower eyelid scaly. Nostril pierced in a single 
nasal; no supranasals; frontonasal broader than long, forming broad sutures as well 
with the rostral as with the frontal; frontal a little shorter than frontoparietal and inter- 
parietal together, in contact with three anterior supraoculars; four supraoculars (a 
minute fifth behind); seven supraciliaries; frontoparietal and interparietal distinct, the 
latter longer and completely separating the parietals; parietals bordered by a large tem- 
poral and two enlarged nuchal scales; fifth and sixth upper labials below the eye. Ear- 
opening large, tympanum very distinct, no ear-lobules. 36—38 scales round the 
middle of the body, ventral largest, lateral smallest, all scales smooth. A pair of 
large preanals. The adpressed hind limb reaches the elböw. Digits compressed. 21 
subdigital lamelle under the fourth toe. Tail not quite twice as long as head and 
body. Dark (olive-)brown above, with small black spots, blackish on the sides, finely 
dotted and marmorated with white, tail lighter brown than back; under parts yellow- 
ish white, chin and throat spotted with grey. 
The only specimen is said to have been collected in the neighbourhood of Mel- 
bourne, July 1911. It resembles to some extent Lygosoma quoyi DUM. & BIBR. 
but differs in having the prefrontals rather widely separated, and the parietals not 
meeting behind the interparietal, rather short toes with only about 21 subdigital 
lamell&e under the fourth toe. 
Lygosoma guichenoti Dum. & BIiBR. — Two specimens from Blackal Range 
(rain-forest), South Queensland, »/, 1911. 
Lygosoma decresiense FITzINGER — Two specimens from Adelaide, ”/,, 1911. 
Lygosoma quadrilineatum Dum. & BiBR. — Two specimens from Perth, ”/; 1911. 
! Rep. Horn Scientific Expedition to Centr. Austr. Part. II Reptilia p. 140—142. 
K. Sv. Vet. Akad. Handl. Band 52. N:o 3. 
[SA 
