1. OENITHORHTNCHTJS. 387 



Vlacovic, SB. A.k. Wien, ix. p. 152, pi. xxiv. (1862) (reproductive 

 organs). 



Wagndb, De partibus Mammalium os temporum constituentibiis, 

 p. 20 (1858J. 



Owen, Phil. Trans, clv^. 671, pi. xli. (new-born animal) (1865). 



Floweb. (See under Echidnidse.) 



Peters. (See under Echidnidse.) 



Gb&bnbauh,, Jenaiscbe Zeitscbr. ii. p. 375 (1866) (heart). 



Owen, Anat. Vert. vol8. ii. and iii. (1866-68). 



CouBS, P. Essex Inst. vi. pt. ii. p. 127 (1871) (myology), 



Spicbb, p. R. Soc. Tasm. 1876, p. 162 (poisonous effects of wound 

 from spur). 



Cbeighton, J. Anat. Phys. xi. p. 27 (1876) (mammary glands). 



GiBBBL, Z. ges. Nat. 1. p. 96 (1877) (shoulder-gland). 



Martins. (See under Echidnidse.) 



HuxLBY, P. Roy. Soc. xxviii. p. 395, pi. viii. fig. 4 (1879} (pelvis). 



Pritchard, Phil. Trans, clxxii. p. 267, pis. xlv. & xlvi. (1881) 

 (cochlea). 



Lankestbb, p. Z. S. 1882, p. 549, pis. xxxviii.-xli. ; and 1883, p. 8, 

 pis. iii. & iv. (cardiac valves). 



PouLTON, Q. J. Micr. Sci. xxiii. p. 453, pi. xxxii. (1883) (tongue). 



Id. op. cit. xxiv. p. 118, pi. v. (1884) (ovarian ovum). 



Gill, Science, iv. p. 453 (1884). 



Gttnn, J. Anat. Phys. xviii. p. 400, pi. xix. (1884) (eye). 



Spencer, Nature, xxxi. p. 182, figs. 1-3 (ova) (1884). 



Turner, J. Anat. Phys. xix. p. 214 (1885) (" dumbbell-shaped bone"). 



Macg-illivhay, Tr. Roy. Soc. Victoria, xxi. p. 120 (1885) (reproduc- 

 tion). 



Miklouho-Maclay, P. Linn. Soc. N. S. W. ix. p, 1204 (1885) (tem- 

 perature). 



Westling, Bih. Svensk. Akad. Handl. ix. No. 8, p. 27, pi. iii. (1885) 

 (neurology of limbs). 



Gegenbaur, Ziir Kenntniss derMammaorgane der Monotremen (1886). 



Owen, P. Roy. Soc. xlii. p. 391 (1887) (newly born young). 



Caldwell, P. Roy. Soc. xlii. p. 177 (1887) ; id. Phil. Trans, clxxviii. 

 p. 463, pis. xxix.-xxxi. (1887) (embryology). 



PouLTON, P. Roy. Soc. xliii. p. 353 (1887) (true teeth). 



MiVART, P. Roy. Soc. xliii. p. 372 (1887) (dual origin of Monotremea 

 and other Mammals). 



Sbbley, p. Roy. Soc. xliv. p. 131 (1888) (horny plates described as 

 teeth). 



PoTJLTON, Q. J. Micr. Sci. xxix, p. 9, pis. ii.-iv. (1888) (true teeth and 

 horny plates). 



, 1. OENITHOKHYNCHUS. 



Type. 



Platypus, Shaw, Nat. Misc. x. letterpress to pi. 38o 

 (1799) ; nee Herbst, Natursyst. Insekt. v. p. 128 (1793) 

 (Coleopt.) .... O. anatinus. 



Grnithorhynchus, Blumenh. VoigVs Mag. Naturk. ii. 

 p. 205 (1800) 0. anatinus. 



Dermipus, Wiedem. Zool. Arch. i. pt. i. p. 180 (180O) . . O. anatinus. 



Form elongate, depressed. Toes 5 — 5, broadly webbed, the mem- 

 brane anteriorly considerably surpassing the tips of the claws, but 

 posteriori}' only reaching to their bases ; aU the toes with long 



2c2 



