20 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. 62. 
METASQUALODON HARWOODI (Sanger). 
Zeuglodon harwoodi SanGER E. B., Proc. Linn. Soc. New South Wales, Sydney, 
vol. 5, pt. 3, pp. 298-300, text figs., 1881. 
Type specimen.—-Based upon one molar and the fragments of a 
second. 
Type locality.—Found in a bed of yellow calcareous clay near Wel- 
lington on the Murray River in South Australia. Sanger considered 
that these beds were Eocene in character. More recently, Hall * 
states that the formation which comprises the Murray River cliffs is 
generally regarded as Janjukian. The term Janjukian has also been 
applied to the Santa Cruz beds of Patagonia. Various writers have 
placed the age of these beds from Eocene to Miocene. Lower Mio- 
cene. 
Subsequent allocation.—A new genus, Metasqualodon, was proposed 
for this species by Hall.** According to Abel*®* the Zeuglodon har- 
woodi of Sanger should be placed in the family Microzeuglodontidae 
and he tentatively cited the form as Microzeuglodon? harwoodi. At 
present this genus is too slightly known to offer any support for judg- 
ment of its relationships. 
It still remains to be shown that Hall was right in allocating the 
tooth from Mount Gambier with Sanger’s form. The ornamentation 
of the enamel crown suggests a closer relationship with Parasqualo- 
don wilkinsoni. In that case this tooth represents one of the poste- 
rior premolars. 
COLOPHONODON HOLMESII Leidy. 
Colophonodon holmesii Lerpy, J., Proc. Acad. Nat. Sci. Philadelphia, vol. 6, p. 
377, 1853. 
Type specimen.—Represented by a nearly entire tooth, with frag- 
ments of five others. Type teeth possibly in the Academy of Natu- 
ral Sciences at Philadelphia. 
Type locality—Sands of Ashley River, South Carolina. ? Edisto 
marl or Upper Miocene. 
Subsequent allocation.—This species was referred to the genus Squa- 
lodon by Cope.®’ According to Leidy * these teeth are too smali to 
be referred to either Squalodon atlanticus or Squalodon antverpiensis, 
and he suggests they may possibly bear a closer relationship with 
Agorophius pygmaeus. The remains are altogether too incomplete to 
propose any definite allocation in the light of our present knowledge 
of the fauna of these phosphate deposits. 
84 Hall, T. S., Proc. Roy. Soc. Victoria (new ser.), Melbourne, vol. 23, pt. 2, art. 23, p. 263, 1911. 
85 Hall, T. S., Idem., p. 262, 1911. 
86 Abel, O., Denkschr. Kais. Akad. Wiss. math.-naturw. K1]. Wien, vol. 90, p. 220, 1913. 
87 Cope, E. D., Proc. Acad. Nat. Sci. Philadelphia [vol. 19], p. 153, 1867. 
88 Leidy, J., Journ. Acad. Nat. Sci. Philadelphia, ser. 2, vol. 7, pp. 418-420, pl. 28, figs. 15-17, 1869. 
