Klem — Revision of the Palaeozoic Palae'echinoidea. 35 



1876. Palaechinussphaericus. Keeping, Quart. Journ.Geol. 



Soc. Lond., vol. 32, pt. 1, p. 38. 

 1889. Palaechinus sphaericus. Duncan, Ann. Mag. Nat. 



Hist., ser. 6, vol. 3, p. 196, figs. 2-7. 

 1889. Typhhchinus sphaericus. Neumayr, Stamme des 



Tiiicrreiches Wirbcllose, Bd. 1, p. 362. 

 1892. Palaechinus sphaericus. Lohest, Bull. Soc. Geol. 



Belgique, T. 19, p. 93. 



1897. Palechinus sphaericus. Tornquist, Abhdl. Geol. Karte 

 Elsass-Lothr., Bd. 5, Hft. 6, p. 738, taf. 21, fig. 3. 



1901. Palaechinus sphei'icus. Smith, Fauna, Flora, Geol, 



Clyde Area, p. 285. 

 1901. Palaechinus sphericus. Hind and Howe, Quart. Journ. 

 Geol. Soc. Lond., vol. 57, p. 352, 355. 



General form spherical. Interambulacra consist of six or 

 seven columns each. Ambulacra prominent, convex, with two 

 rows of pores on each side. Surface ornamentation minute 

 tubercles. No ocular plates, the five genital plates forming a 

 closed ring. Four of the genital plates have three pores each, 

 while the fifth has only one. 



Geological formation and locality : Carboniferous Lime- 

 stone, Kirkby-Stephen, Westmoreland. 



UNDETERMINED OR INSUFFICIENTLY DETERMINED SPECIES. 



1. Palaechinus paradoxus Stuckenber<y. 



1898. Palaechinus paradoxus. Stuckenberg, AUgemeine 

 Geol. Karte Russland, Blatt 27, p. 231, 343. 



Geological formation and locality: Carboniferous, Kama 

 Basin, Russia. 



2. Palaechinus phillipsiae Forbes. 



1848. Palaechinus Phillipsiae. Forbes, Mem. Geol. Surv. 



Great Brit., vol. 2, pt. 1, p. 384, tab. 29, fig. 1. 

 1852. Palaechinus Phillipsiae. Roemer, Bronn's Leth. 



Geog. bd. 1, th. 2, p. 288. 

 1858. Palaechinus Phillipsiae. Desor, Syn., p. 159. 



