44 Trans. Acad. Sci. of St. Louis. 



Body quite small, wider at the lower end and the sides 

 tapering, giving more of a pear shape to the body. Seven 

 columns of plates in each interambulacrum and only eight in 

 each ambulacrum. 



Geological formation and locality: Warsaw Group, Buz- 

 zard's Roost, Franklin Co., Ala. 



UNDETERMINED OR INSUFFICIENTLY DETERMINED SPECIES. 



1. Melonites etheridgii Keeping. 



1876. Melonites JEtheridgii. Keeping, Quart. Journ. Geol. 

 Soc. Lond., vol. 32, pt. 4, p. 398, figs. 1-6. 



1896. Melonites etheridgii. Jackson, Bull. Geol. Soc. Amer., 

 vol. 7, p. 240. 



Mr. Keeping made his description from such fragments 

 that the species' claim to validity does not rest on a firm basis. 

 As Prof. Morris justly remarked in the discussion following 

 the reading of Mr. Keeping's paper, " the specimen was in too 

 imperfect a state of preservation to show whether the valleys 

 described by the author as dividing the ambulacral areas 

 really existed." 



Geological formation and locality: Carboniferous, Derby- 

 shire. 



2. Melonites nov. sp. Julien. 



1874. Melonites nov. sp. Julien, Compt. Rend. Acad. Sci. 

 Paris, T. 78, p. 76. 

 Geological formation and locality : Carboniferous, L'Ar- 

 doisiere, France. 



3. Melonites Tornquist. 



1897. Melonites. Tornquist, Abhdl. Geol. KarteElsass, Bd. 

 5, Hft. 6, p. 763, taf . 20, fig. 7. 



Geological formation and locality: Carboniferous, Huns- 

 riickenwald, Elsass, Germany. 



