232 DENTALIUM, PALEOZOIC. 



D. NAviCANUM Ryckholt, 1852. Meni. Couronn. Acad. Roy. 

 Sci. Belg., Vol. xxiv, p. 169, (no description), pi. x, f. 11. 



Devonian, near Vise. 



D. NOTABiLE Eichwald, 1856. Bull. Soc. Imp. Nat. Moscou, 

 Vol. xxix, pt. 2, p. 583 ; Lethsea Rossica, i, p. 1061, Atlas, pi. 40, 

 fig. 9. 



" Orthoceratites limestone " of Poulkova, Pojmvo and Poutilivo, 

 Government of St. Petersburg, Eussia. 



D. ORNATUM Koninck, 1841. Descr. Anim. Foss. Carbonif. 

 Belgique, p. 318, pi. 22, fig. 3 ; Ann. Mas. Roy. d'Hist. Nat. Bel- 

 gique, viii, pt. 4, p. 218, pL 49, f. 4-9, (1883). ' 



Carboniferons, Vise, Belgium. 



D. dentaloideum " Phillips " Ryckholt, Melanges Paleont., pt. 

 1, p. 68, (not Orthoeeras dentaloideum Phill.). 



D.? PERARMATUM Ryckholt, 1852. Mem. Couronn. Acad. Roy, 

 Sci. Belg., Vol. xxiv, p. 67, pi. ii, figs. 39-40. 



Carboniferous, Vise. 



With deKoninck, we doubt if this be a Dentalium. It bears 

 spines toward the smaller end, being elsewhere smooth ; circular in 

 section. 



D. PRiMARiuM Hall 1858. Rep. Geol. Surv. Iowa, i, pt. 2, p. 

 666, pi. 23, f. 16. 



Subcarboniferous, Warsaiv Group, Hancock Co., Illinois. 



D. PRiscuM Miinster, 1844. Gold fuss, Petrifac. German., Vol. 

 iii, p. 2, pi. 166, fig. 3 ; Ann. Mus. Roy. d'Hist. Nat. Belg., viii, pt. 

 4, p. 215, pi. 49, f. 1-3, 20, 21. 



Carboniferous, Tournay, Belgium. 



Reported, but probably incorrectly, from Scotland. 



D. RECTiuscuLUM Eichwald, 1846. Geogn. de Russie, p. 425; 

 Lethsea Rossica, i, p. 1062, Atlas, pi. 40, fig. 12. 



Upper Carboniferous, Goniatites beds of Kasalschy-datschy, Oural 

 Mts., and near Serpoukhoiv, government of Moscow, Russia. 



D. RUGOSUM Eichwald, 1846. Geogn. de Russie, p. 425 ; Lethaea 

 Rossica, i, p. 1063, Atlas, pi. 40, fig. 8. 



Upper Carboniferous: Sloboda, government of Toula, Russia. 



D. SCOTICUM Young, MMS. in Kirby, 1880. Quart. Journ. 

 Geol. Soc. Lond., Vol. xxxvi, p. 563 and 589. Nomen nudum. 



Calciferous series of the Carboniferous, Great Britian. 



