DENTALIUM, PALAEOZOIC. 229 



D. UNDULATUM Muenster, 1844, Goldfuss, Petrifac. Germ., vol. 

 iii, p. 3, pi. 166, fig. 8. 



Trias, St. Cassian, Tyrol. 



D. vALANGiENSEPictet &Campiche, 1864. Paleout. Suisse, (3), 

 pt. 2, Foss. Terr. Cretac. Sainte Croix, p. 723, pi. 98, f. 16-18. 



Vctlangian stage of the Neocomian, at Villers-le-Lac, near le Lode, 

 Switzerland. 



PALAEOZOIC SPECIES. 



There may possibly be some accessions to the roll of Palaeozoic 

 scaphopods from the genus Coleolus of Hall, supposed to belong to 

 the Pteropoda. The species are mainly thinner and straighter than 

 the shells of Dentalium ; but there are also thin and nearly straight 

 Dentalia, as in the subgenus Rhabdus. 



D. ACUMEN (Koninck), 1883. 



Entails acumen KON., Ann. Mus. Roy. d'Hist. Nat. Belgique, viii, 

 pt. 4, p. 216, pi. 49, f. 22 (1883). 



Carboniferous, Vise, Belgium. 



D. ACUS Eichwald, 1856. Bull. Soc. Imp. Nat. Moscou, Vol. 

 xxix, pt. 22, p. 584 ; Lethsea Rossica, i, p. 1062, Atlas, pi. 40, fig. 

 10. 



Silurian, Orthoceratites limestone near Poulkovo, government of St. 

 Petersburg, Russia. 



D. ACUTISULCATUM Gurley, 1883. New Garb. Foss., p. 7. (" Pub- 

 lication not valid ", see Miller, North American Geology and 

 . Paleontology, 1889, p. 402). 



Carboniferous, U. S. 



D. ANNULIFERUM Pilsbry & Sharp, 1898. New name for D. 

 annulatum Sandb. not Gmel. 



D. annulatum SANDBERGER, 1842. Neues Jahrb. Min., Geogn., 

 Geol., etc., p. 399, (no description) ; Versteinerungen des Rhein- 

 ischen Schichtensystems in Nassau, 1850-1856, p. 241, pi. 26, f. 20, 

 20a. 



" Stringocephaluskalk" Villmar, Prussia. 



D. ANNULOSTRIATUM Meek & Wortheu, 1870. Proc. Acad. Nat. 

 Sci. Philada., p. 45 ; Palaeontology of Illinois (Geol. Surv. 111., v), 

 p. 589, pi. 29, f. 7. 



Carboniferous, Danville, Illinois. 



