

55 



it is presumed that all tlie species of the genus Halitherium passed 

 their existence in the shallows of the sea, or about the estuaries of rivers, 

 and partook of the manners of the dugongs of the present day. 



This genus was established by M. Kaup, to bring together many 

 fragments incorrectly ascribed by Cuvier and others to different 

 groups. 



M. Pictet enumerates the following species : 



HALITHEEITJM DTTBIIJM, Cuvier. 

 Hippopotamus dubius, Cuvier. 



HALITHERIUM GUETTAEDI, de Blainville. 



Vacha marina, Guettard. 

 Manatus Guettardi, de Blainville. 



HALITHEEITIM FOSSILE, Cuvier. 



Pkocafossilis, Cuvier. 

 Trichechus fossilis, Cuvier. 

 Trichechus molassicus, Jaeger. 

 Manatus Cuvieri, Laurillard. 

 Manatus Cordieri, de Christol. 



HALITHEEIUM BEAUMONTI, de Christol. 

 HALITHEEITJM STFDEEI, de Meyer. 

 Metaxitherium Studeri, de Meyer. 



HALITHEEITJM SEEEESSII, Gervais. 



Gheirotnerium, of Bruno. 



Manatee, Dugong, Hippopotamus of various French authors. 



Q-enus TEACHYTHEEiUM, 1 Gervais. 



M. Grervais founded this genus solely upon one tooth, which was 

 obtained from the marine calcareous deposit of the Meiocene period at 

 the Eeole in France ; consequently no information can be supplied beyond 

 that it was the last molar of the lower jaw, and that it had on the crown 

 three transverse tubercular ridges, and not two as in the corresponding 

 tooth of the preceding genus, but otherwise resembling it. 



Trachytherium Raulinii, Grervais, is necessarily the only species known. 



5 Genus EDENTATTTM. 



Genus EnTTiNA, 2 Illiger. 



"Without teeth of any kind, the corneous lamellae, before described, 

 but on a larger scale, supplying their place ; lips double, the outer 



s, rough, and 6-nptov, animal. 

 2 pvris, wrinkled. 



