232 DENTALIUM, PALEOZOIC. 



D. NAVICANUM Ryckholt, 1852. Mem. 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, Popovo and Poutilivo, 

 Government of St. Petersburg, Russia. 



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

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

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



Carboniferous, Vise, Belgium. 



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

 1, p. 68, (not Orthoceras 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, Warsaw Group, Hancock Co., Illinois. 



D. PRISCUM Munster, 1844. Goldfuss, 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 Serpoukhow, government of Moscow, Russia. 



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

 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. 



