64 Trans. Acad. Sci. of St. Louis. 



the water, it is not very doubtful to say that, for the study 

 of this particular class of fossils, the best material is found 

 on this side of the water. Comparing the figures of the 

 British collection with my own, shows at a glance on which 

 side the most material is to be found. Aside from this, my 

 collection, which was brought together in fifty years, 

 and comprises about ten thousand specimens, contains 

 a number of real scientific specimens (pathologic and 

 abnormal developments and specimens illustrating mor- 

 phology) hardly to be found in any other collection. A 

 student could learn more on a dozen or two picked specimens 

 from our material than from the whole collection of Gilbert- 

 son, Kofe or de Koninck. Besides specimens illustrating the 

 morphology, my collection contains considerably over one 

 hundred pathologic and abnormal specimens. 



I give the names as arranged in Bather's Catalogue, and an 

 asterisk denotes the type specimen. 



Bi". M. stands for British Museum and H. for Hambach. 



Br. M. H. 



Codaster acutus o o 



«' canadensis o 



" gracilis o o 



* " kentuckyensis o 



" pulchellus o 



* " pyramidatus o o 



" trilobatus o o 



*Codonites campanulatus o o 



" conicus ■ 



" fusiformis o o 



" gracilis '^ 



" stelliformis o o 



♦Cryptoblastus kirkvvoodensis. o 



«• melo o ^ 



" pisum o 



«• projectus ° 



Cryptoschisma schulzi o o 



Eleutherocrinus cassedayi o o 



Granatocrinus cornutus ° 



'< curtus ° 



'< campanulatus. o 



" derbiensis ° ^ 



" ellipticus o o 



•• exiguus ^ 



