SPECIES A.M.N.H. No. 153487 MAMMALS Sk. No. 11 DICKAREE WATERHOLE - 10 miles south of BIRDSVILLE - S.W. QUEENSLAND East margin of Ampoon Desert. AUSTRALIAN SECTION COLLECTOR: L. MACMILLAN. Coll. No. M. 11. (above). DATE 1st. JUNE 1940. SEX ♂ (normally imm.) DUG OUT OF SMALL SHOT BURROW. 2PM - 5PM. WGT. 34.57 gm. SKL. STM. 1/4, chewed seeds, probably grass seeds, sand. CONDITION GONADS. There is some doubt about the sex of this specimen; whatever it is it appear to have very small gonads. As a thing like a penis could be obscured. It was classed as a ♂. TOTAL:- 237mm. TAIL:- 137mm HEAD:- 34-5mm HEAD:- 25mm. MOULT WING R. 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25. L. 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25. TAIL R. 1,2,3,4,5,6,7,8,9,10. L. 1,2,3,4,5,6,7,8,9,10. BODY UPPERS-RUMP LOWER BACK UPPER BACK NAPE CROWN CHEEKS UNDERS-VENT. FLANKS BELLY BREAST NECK CHIN ABR. W. T. W./T. SKULL Ticketed Number M. 11. REMARKS During this afternoon only small outer burrows were dug out + it was found that there was a marked preponderance of ♀ over ♂ (6♀, 2♂) + both these ♂ may be sub adult or imm. From general observation during digging out I place the life history of the burrow as follows. Referring back to the rough chart on field card for specimen No. 9 (31st. May). From the point marked @ on the plan a long single direct line burrow fully loose sand led for 12 ft to another even longer burrow which when dug out yielded not a single specimen. This other burrow I take to be the real parent burrow of the example given; its original entrances were fully 24ft from the original entrance to this burrow given as an example selected. To me it appears as if the 9th charted burrow started as a small breeding burrow of the real parent burrow & started its original first entrance was at @ + the nest or breeding chamber was that at @. This burrow was extended + enlarged + probably @ became the later become the nest or breeding burrow. This burrow eventually grew sufficiently large to become in its turn a parent burrow + the ♀'s (cont over leaf R10)↑ 26/47 Body 105. S. & MCD. PTY. LTD., MELB., NO. 4764.