ZOOLOGICAL LITEllATURE. 
28 
^ Myrmecobim fasciatus probably produces only four young at a time. 
Krefft, 1. c. p. 3. 
Phascolomys. Prof. M^Coy regards PA. setosus as a distinct species, and 
PA. niyer as a variety of PA. platyrhinus. Ann. & Mog. Nat. Hist. 1868, i. 
pp. 80-31. 
Thylacinus hreviceps, sp. n., Krefi't, Ann. & Mag. Nat. Hist. 1868, ii.p. 200, 
pi. 17 (skull), Tasmania. 
MONOTREMATA. 
In opposition to the view defended by Prof. Peters with regard to the ho- 
mologies of incus and malleus of Mammals, and os quadratum and articulary of 
the mandible of the other vertebrates [see Zool. Record, iv. pp. 40 & 41, and 
Sitzgsber. Ges. ntrf. Freund. Berlin, 1868 (1869), p. 6 (Tacky glossushystrix)\ 
Prof. Reichert recapitulates the conclusions arrived at by embryological re- 
searches. Sitzgsber. Ges. ntrf. Freund. Berlin, 1868 (1869), p. 5. [See also 
preceding page.] 
