2 44 ] 
RECORDS OF W.A. MUSEUM. 
THE MAMMOTH CAVE 
( Continued ). 
By LUDWIG GLAUERT, F.G.S., etc. 
ORDER MONOTREMATA. Fam. Tachyglossidae. 
Zaglossits Gill (1877). 1 
Osteog. Monot. Viv. et Foss., p. 43, 1877 
Comptes Rendus, Paris LXXXV No. 19, p. 83S, 1877. 
Bull. Soc. Zool. Franc. VI for 1881. No. 6, p. 267-270 
1882. F ' ' ' 
ZAGLOSSUS HACKETTI, 
Proechidna, Gervais 
Acanthoglossus, Gervais 
Bruijnia, Dubois . . 
sp. nov. 
HACKETT’S GIANT ECHIDNA. 
Plates XXXVI-XXXVII. 
The bones about to be described were collected in the 
Mammoth Cave, where they where found intermingled with the 
remains of Sthenurns, Macropus , etc., in the older portion of the 
deposit first examined in 1909. 
They comprise the atlas vertebra, the clavicles and episternum, 
the pelvic girdle, two femora, a tibia and a radius. 
The limb bones are all twice the length of those of the living 
species of Echidna (Tachyglossus aculeatus') and in addition are 
stouter in proportion. I he bones of the trunk show a similar 
superiority in dimensions. 
Fossil Echidnas of large size have been known in Australia for 
many years. In 1868 2 Krefft described the proximal end of a 
humerus which he named Echidna oweni, and in 1884 3 Prof. Owen 
examined the cast of a more perfect example (E. ramsayi) which is 
now regarded as identical with the former species, to which have 
also been ascribed the other remains of large fossil Echidnas in the 
Australian Museum, Sydney. In 1895 4 Mr. W. S. Dun 
fully described the imperfect skull and atlas vertebra of a 
larger animal, which he named Echidna (Proechidna) robusta. 
1 Ann. Record Science and Industry for 1876, p. clxxi, which appeared on 
May 5th, 1877. Gervais Osteog. Monotremes Viv. et Foss p 43 
was published on Nov. 30th, 1877, hence Gill's name has priority over 
that proposed by Gervais. Fide Palmer. 
2 Ann Mag. Nat. Hist. (4) Vol. x, p. 113 (1863). 
3 Phil. Trans. 1884, p. 273. 
i Rec. Geol. Surv. N.S. Wales, vol. IV, part 3, p. 121 (1895). 
