450 ROBERT TRACY JACKSON ON ECHINI. 



Echinocrinus striatus Eichwald. 

 Plate 15, f5g. IG. 

 Echinocrinus striatus Eichwakl, 1S60, p. 654, Plate 33, fig. 17. 



This species is quite unrecognizable. Known only from a fragmentary spine. 

 Dolomitic Limestone, Bogoslowsk, Ural, Russia. 



Echinocrinus sp. Austin. 



Echinocrinus sp. T. Austin, 1848, p. 294. 



A large species of Echinocrinus [ = Archaeocidaris] is reported by Austin from the Wenlock 

 Limestone, Silurian, of Glidden Hill, which is near Coalbrookdale, in Shropshire. There is 

 no recognizable description, and Dr. Bather, who called my attention to the reference, knows 

 nothing about the specimen (footnote p. 236). 



Melonitiden Tornquist. 

 Melonitiden Tornquist, 1897, p. 763, Plate 20, fig. 7. 



A single interambulacral plate is figured by Tornquist. Genus doubtful. 

 Lower Carboniferous, Hunsriicken, Germany. 



Oligoporus (?) minutus Beede. 

 Plate 43, fig. 6. 



Oligoporus (?) minutus Beede, 1899, p. 126, Plate 32, fig. 3; 1900, p. 49, Plate 7, fig. 3; Klem, 1904, p. 40. 

 Oligoporus minutus Lambert and Thiery, 1910, p. 121. 



Test spheroidal. A small specimen, apparently an internal mold, 23 mm. in diameter, 

 has in each ambulacrum four vertical series of pore-pairs. No impressions of plates are shown, 

 so that the character has to be gathered from the shape and pores alone. It is probably refera- 

 ble to the genus Lovenechinus which as described (p. 324) has four columns of plates and 

 therefore four vertical series of pore-pairs at the midzone in each ambulacral area. 



Deep Creek Limestone, Upper Coal Measures, northeast of Topeka, Kansas. Professor 

 Beede informs me that the type is in the collections of the University of Kansas. 



*Palaechinus (?) konigii M'Coy. 

 Plate 29, fig. 9; Plate 31, fig. 7. 



Palaechinus (?) ko7iign M'Coy, 1844, p. 172, Plate 24, figs, la-lc: Desor, 1858, p. 159. 

 Palacchinus koenigii M'Coy, 1844, [legend in pencil on] Plate 24, fig. 1^ ; d'Orbigny, 1850, p. 154. 

 Echinus koenigii M'Coy, 1862, [legend on] Plate 24, fig. 1.^ 



' In a copy of M'Coy's Carboniferous Limestone Fossils of Ireland, of tiie 18G2 edition, seen at tlie Jermyn St. Mu- 

 seum, the name Echinus koenigii is printed on tlie plate, as stated. Dr. Kitohin writes me that M'Coy (1862, p. 274) in 

 the errata, referring to this figure says, "read Palaechinus instead of Echinus." In two copies of the 1844 edition, one at 

 the British Museum and one at the Museum of Comparative Zoology, the name on the plate is partially erased and changed 

 in pencil to read, "Palaechinus koenigii." See footnotes pp. 275, 277, 280. 



