CRETACEOUS. i 99 
MEDUSITES LATILOBATUS Ammon. 
Medusites latilobatus Ammon, 1886. Abhandl. Math.-phys. Classe Kénigl. bayerischen 
Akad. Wiss., Vol. XV, p. 159, figure in text. 
This species is based on a somewhat indistinct specimen preserved on 
a flint pebble found in the diluvium near Hamburg. The pebble is thought 
to have been derived from the Upper Cretaceous. All that is known of 
the species is shown in the accompanying figure. (See p. 97.) 
FiG. 25.—Medusites (?) latilobatus. Copy of Dr. Ammon’s illustration of the type specimen. 
MEDUSITES HELGOLANDICUS Brandt. 
Medusites helgolandicus Brandt, 1871. Mém, Acad. imp. sci. St. Pétersbourg, 7th series, 
Vol. XVI, No. 11, p. 2. 
Medusites helgolandicus Haeckel, 1880. System der Medusen, p. 647. 
This specific name appears to have been based on the report of the 
discovery of specimens in Helgoland that were subsequently lost. 
