PART III: MONOTREMATA, TACHYGLOSSIDA—INCERTA SEDIS. 889 
TACHYGLOSSIDZE. 
FAMILIES AND SUBFAMILIES. 
IEchidnide Burnett, 1830. Tachyglossidae Curr, 1872. 
GENERA AND SUBGENERA. 
Name, authority, and date. Type or included species, and localiites. 
f Acanthoglossus Gervais, Nov., 1877 Tachyglossus bruijnii, New Guinea. (See Za- 
glossus, Proechidna, and Bruynia.) 
- + Acanthonotus GoLpruss, 1809...... Acanthonotus myrmecophagus ( — Myrmecophaga 
aculeata), New South Wales. (See Tuchy- 
glossus. ) 
Aculeata * E. Grorrroy, 1796 ...... Myrmecophaga aculeata, New South Wales. 
Bruynia Dupors, 1882 --_ 22 02l 25.22. New name for Acanthoglossus Gervais, 1887. 
(See Zaglossus.) 
i;Eohidna (3. CuviER, 1/798::.......- ‘Les Fourmiliers épineux,’ (= Myrmecophaga 
aculeata), New South Wales. (See Tachy- 
glossus. ) 
Echinopus G. FiscHEr, 1814 ........ New name for Echidna G. Cuvier, 1798. (See 
Tachyglossus. ) 
Proechidna Gervais, Nov. 30, 1877.. New name for Acanthoglossus Gervais, 1877. 
Protechidna H AEcKEL, 1895......... Hypothetical ancestor of the edentate Mono- 
tremes. 
Syphomia RarINESQUE, 1815 ........ New name for Echidna Cuvier, 1798. 
Tachyglossus IrnriGER, 1811 ......... Myrmecophaga aculeata (type), Echidna setosa, 
Australia. 
Zaglossus GiLL, May 5, 1877........ Tachyglossus bruijnii, New Guinea. 
INCERTZE SEDIS.? 
FAMILIES AND SUBFAMILIES. 
Adiastaltide AMEGHINO, 1894. Dideilotheride AMEGHINO, 1894. 
Anathitide AMEGHINO, 1894. Patrotherida H xEckEL, 1895. 
Architherida HAECKEL, 1895. Scoteopside AMEGHINO, 1894. 
iDistichotherida H &ECKEL, 1895. ?Stagodontid: M ^RsH, 1889. 
iEustichotherida H ^EckEL, 1895. t Tristichotherida H ^EcKEL, 1895. 
GENERA AND SUBGENERA. 
Name, authority, and date. Type or included species, and localities. 
Adiastaltus AMEGHINO, 1893 ........ Adiastaltus habilis, southern Patagonia. 
Anathitus AMEGHINO, 1893.......... Anathitus revelator, southern Patagonia. 
Architherium H AECKEL, 1895 ....... Hypothetical primitive Monotremes. 
} Delotherium AMEGHINO, 1889. ...... Delotherium venerandum, Rio Santa Cruz, Pata- 
gonia. (See Dideilotherium. ) 
Dideilotherium AMEGHINO, 1889..... New name for Delotherium Ameghino, 1889. 
Patrotherium H AECKEL, 1895........ Hypothetical ‘oldest mammal.’ 
Plagiocoelus AMEGHINO, 1894........ Plagiocoelus obliquus, Patagonia. 
Scoteops AMEGHINO, 1887........... Scot@ops simpler, southern Patagonia. 

aSome authorities question the validity of Aculeata as a genus (see THomas, Ann. 
Mus. Civ. Stor. Nat. Genova, ser. 2a, X VIII, 621, 1897). 
>The above-named genera described by Ameghino are referred to the Monotremata, 
each being placed in a separate family, except Adiastaltus and Plagiocoelus, which 
are grouped together in the Adiastaltidex. 
