PART III: SIRENIA, HALITHERIIDJE— TRICHECHID;EF. 905 
Name, authority, and date. Tupe or included species, and localities. 
? Pachyspondylus BRANDT, 1873...... Lapsus for Pachyacanthus Brandt, 1871. 
Pontotherium Kaur, 1840. .......... Pontotherium sp., Europe. 
Prototherium ZiGNo, 1887........... Halitherium veronense, Monte Zuello, Italy. 
Pugmeodon Kv», 1838 -.--........ Pugmeodon schinzii, Flonheim, Germany. 
TeutaodusARTED [8007-22-27 --.--- Rytiodus capgrandi, Bournic, France. 
?Trachytherium GERVAIS, 1849 ...... Trachytherium raulinii, Ailas, France. 
HYDRODAMALIDZ. “ 
FAMILIES AND SUBFAMILIES. 
Hydrodamalide Patmer, 1895. Rytinade Gray, 1843. 
GENERA AND SUBGENERA. 
Name, authority, and date. Type or included species, and localities. 
?Haligyna BrrrBERG, 1828.......... Trichechus manatus borealis, Bering Island. Ber- 
: ing Sea. 
Hydrodamalis Rerzius, 1794 ........ Hydrodamalis stelleri (= Manati gigas), Bering 
Island, Bering Sea. 
T Manati ZIMMERMANN, 1780 ........ Manati gigas, Bering Island, Bering Sea. 
Nepus G. Friscugn, 1814. ........... Nepus stelleri, Bering Island, Bering Sea. 
RytinalirniGres Lil 32s. 5-235 Trichechus manatus borealis, Bering Island, Ber- 
ing Sea. 
SirenedorNE 704 seh. eee Trichechus manatus borealis, Bering Island, Ber- 
ing Sea. 
Stellera (‘Cuvier’) Bownprcn, 1821... Trichechus manatus borealis, Bering Island, Ber- 
ing Sea. 
MANATIDZE. (See TRICHECHIDZ. ) 
PRORASTOMIDZE. 
Prorastomidz Cork, 1889. 
GENERA AND SUBGENERA. 
Name, authority, and date. Type or included species, and localities. 
Prorastomus OWEN, 1855............ Prorastomus sirenoides, Jamaica. 
TRICHECHIDZE. 
FAMILIES AND SUBFAMILIES. 
Manatide Gray, 1821. Trichechidae Git, 1872. ^ 
GENERA AND SUBGENERA. 
Name, authority, and date. Type or included species, and localities. 
Halipaedisca GisTEL, 1848 .......... New name for Manatus Brünnich, 1772. 
Manatherium HngrLAUB, 1386 ...... Manatherium delheidi, Antwerp, Belgium. 
Manatus BRUNNICH, 17/2-----.----- Trichechus manatus, tropical America. 
Nemodermus RAFINESQUE, 1815...... Manatus sp. (nomen nudum). 
Oxystomus G. Frscugn, 1805 ........ Trichechus manatus, tropical America. 
Ribodon AMEGHINO, 1883. .......... Ribodon limbatus, Paraná, Argentina. 
Trichéchus LINN;EUS, 1758 .........- Trichechus manatus, tropical America. 

@ All the generic names in this family are based on a single species, for which the 
earliest available generic name is Hydrodamalis Rerztus, 1794. 
b Apparently the first use of the name for a family of Sirenia; erroneously applied 
to a group of Pinnipedia much earlier. 
