Tlic Fauna of the BurlijKjton Li/iicsto?ie. — Rozvlty. 251 
concave bases. This blastoid has its nearest all)- in G. pisum 
Codaster blairi comes from beds near Sedalia and the 
Avriter knows it only from Air. Miller's description. 
An undescribed Codaster-like blastoid, found near Sedalia, 
is in Mr. R. A. Blair's possession. 
A Classified List of the Blastoids from the 
Burlington Limestone at Louisiana, Missouri. 
Pentremites elongatus 
Cryptoblastus melo 
projectus 
Schizoblastus savi 
sp? 
Granatocrinus norwoodi 
" concinnuhis 
" 
excavatus 
sp? 
Granatocrinus calycinus 
Codaster 
exiguus 
graciliimus 
? magnibasis 
" 
grandis 
? Stella 
Codonites stelliformis 
" whitei 
'• Ifeviculus 
Metablastus lineatus 
"" ? inopinatus 
? aplatus 
Within the past week and since the above list was made 
out, the writer has fottnd a single specimen of Codonites at 
the top of the fifth division of the Lower Btirlington. It seems 
to be specifically identical with Wachsmuth & Springer's 
Kinderhook blastoid, Orophocrinus conicus. 
Remarks. 
In his description of Cactocrinus obesus, Mr. Keyes mere- 
ly gives the horizon as Burlington limestone, as the type speci- 
men came to him among a number of unlabeled crinoids from 
both divisions of the Burlington. In fact, this species is not 
only from the Upper Burlington, but from the middle of that 
horizon, associated with Physetocrinus ventricosus, Stroto- 
crinus regalis and Agaricocrinus bellatrenia. Messrs. Wach- 
smuth & Springer, in their great work on the Palseocrinoids, 
give the horizon of C. obesus as Lower Burlington and follow 
Mr. Keyes in giving the locality as Hannibal. The types were 
collected at White Ledge by a quarryman named Arnold. 
Then, Messrs. W. &. S.'s statement that Cactocrinus glans 
is the only species of the genus to survive the Lower Burling- 
ton is incorrect. 
Mr. Keyes' Eretmocrinus expansus, despite its inflated 
ventral side, is a Cactocrinus. The second primary radial 
plate is hexagonal and it wants the expanded basal plates. 
