BEEDE AND ROGERS.|] Coal Measures Faunal Studies. 831 
southern aggregation is coralline-molluscoidean and the north- 
ern decidedly molluscan. 
The fossils from the Drum limestone were all taken from the 
Kansas City region (Kansas City odlite). The Kansas City 
oblite is treated in this paper as a continuation of the Drum 
limestone of the southern part of the state. On account of 
the rapid thickening and thinning of the Drum limestone, 
which is semiodlitic, this is not certain. Whether it is con- 
tinuous or not, it occupies a position between the Dennis lime- 
stone and the lola limestone and can thus be taken as its 
stratigraphic equivalent. Since all the fossils noted from this 
limestone are from the Kansas City region, no confusion need 
arise from this usage. 
The distribution of the Iolan species is much more regular 
than those of the preceding stage. The lithologic characters 
of the rock are regular, indicating about the same conditions 
of deposition over a wide area. The Kansas City region has 
furnished over ninety species from this limestone, while less 
thorough collecting from Iola has revealed over sixty. The 
bryozoan and crustacean fauna seems much larger at Kansas 
City, perhaps due to the more thorough collecting. In other 
respects the fauna is not dissimilar, save in the case of a few 
individual species. Cryptacanthia compacta W. and St. J. 
and Meekella striaticostata (Cox) are abundant at Iola and 
Chanute and wanting at Kansas City. The reverse is true of 
Aviculopecten carboniferus Stev., Rhombopora lepidodendroi- 
dea Meek, Cypridella sp. Chainodictyon laxum Foerste, Fen- 
estella remota Foerste, and Cyclus communis Rog. 
The strong sponge fauna of the Allen limestone seems to be 
confined to the region of the Neosho and Verdigris rivers, 
while the Kickapoo limestone and its peculiar fauna has only 
been studied in the northern part of the state. 
The peculiarities of the Oread fauna are in part due to more 
thorough collecting in the northern region and in part to the 
fact that the lower limestone was not seen in the southern 
section. The sponge fauna seems to be confined to the south- 
ern region. Sixteen species of Bryozoa and twenty-two species 
of pelecypods are not found in the Burlington collections, and 
a sponge and Stenopora carbonaria (Worth.) are abundant 
and known only from the latter locality. Awlopora? prosseri 
Beede, Polypora triangularis Rog., Rhombopora lepidoden- 
droidea Meek, and Orbiculoidea missouriensis (Shum.) are 
