ART. 16. TWO SQUALODONTS FROM MARYLAND—KELLOGG. afal 
favor such an allocation. The backward extension of the alveolar 
gutter upon the base of the coronoid, the lack of well-defined 
septa between the alveolae for the two-rooted molars, and the con- 
figuration and general appearance of the fragment as a whole agrees 
well with Eurhinodelphis as represented by material in the United 
States National Museum. 
SQUALODON BURGUETI (Gervais). 
Smilocomptus burgueti GERVAIS, P., Comptes Rendus Acad. Sci. Paris, vol. 28, 
No. 21, p. 645, footnote, January-June, 1849; Zool. et Paléont. frang., Paris, 
ed. 1, vol. 1, p. 161, pl. 41, fig. 4, 1848-1852. 
Type specmen.—Name proposed provisionally for a somewhat 
flattened caniniform tooth. Typein the “Museum d’Histoire Natu- 
relle’’ at Bordeaux, France. 
Type locality.—Found in a shell marl at Salles, Department of 
Gironde, France. This shell marl is considered to belong to the 
Upper Miocene by Tournouer.*® Tortonian or Middle Miocene. 
Subsequent allocation.—This species was considered to be a syn- 
onym of Squalodon grateloupw by Van Beneden.** More recently, 
Trouessart *” placed it in the synonymy of Squalodon bariensis. 
TRIRHIZODON CATULLI (Molin). 
Pachyodon catulli Mourn, R., Sitzungsber. math.-naturw. Cl. Kais. Akad. der 
Wissenschaften, Wien, vol. 35, No. 8, p. 126, pls. 1-2, 1859. 
Type specumen.—This species was based upon 11 teeth, including 
8 which have fairly complete crowns, 2 of which are figured as three- 
rooted, and 3 as two-rooted, as well as 3 other imperfect teeth. G. 
Dal Piaz has recently informed the writer that Molin’s original 
specimens are now lost. They were formerly in the Museum of the 
University of Padova, Italy. 
Type locality.— dallarenaria grigia di Libano circa due ore al 
Nord Est. di Belluno,” compartment of Venetia, Italy. This breccia 
was stated by Molin** to belong to an Eocene formation. This 
determination is probably incorrect, for De Zigno** assigns this 
deposit to the Miocene, and Longhi*° as a result of his study of the 
fossil plants places these breccias in the Aquitanian stage. Lang- 
hiano or Lower Miocene. 
Subsequent allocation.—This species was placed in the genus Squa- 
lodon by Brandt.*! In 1890, Cope * erected a new genus, Trirhizodon, 
35Tournouer, R., Actes Soc. Linn. de Bordeaux, ser. 3, vol. 9, pp. 119-161, 1873; Vaughan, T. W., 
Proc. First Pan-Pacific Sci. Conference held under auspices of Pan-Pacific Union, Special Publ. No. 7, 
pt. 3, table opposite p. 820, Bishop Museum, Honolulu, Hawaii, 1922. 
86 Van Beneden, P. J., Mém. Acad. Roy. Sci. Belgique, Bruxelles, vol. 35, p. 70, 1865. 
37 Trouessart, E. L., Cat. Mamm. viv. foss., Berlin, fasc. 5, p. 1012, 1898. 
38 Molin, R., Sitzungsber. math.-naturw. Cl. Kais. Akad. der Wissenschaften, Wien, vol. 35, p. 126. 
39 Zigno, A. de., Mém. del Istituto Veneto di Sci., Lett. ed Arti, Venezia, vol. 20 [extract separately 
paged, 7], 1876. 
40Longhi, P., Atti Soc. Veneto-Trentina Sci. Nat. resid. in Padova, ser. 2, vol. 3, fase. 1, p. 77, 1897. 
41 Brandt, J. F.. Mém. Acad. lmp. Sci. de St.-Petersbourg, ser. 7, vol. 20, No. 1, pp. 330, 332, 1873. 
« Cope, E. D., American Naturalist, vol. 24, No. 283, p. 603, July, 1890. 
