194 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.41. 



Locality. — Button-mould and Bradbury Knobs, Kentucky; and 

 Stone's farm, Indiana. 



HALYSIOCRINUS Ulrieh. 



1. H. perplexus {Cheirocrinus perplexus Shumard,) ^ is described 

 from Button-mould Knob as "in blue calcareous shale, supposed to 

 be of the age of the Keokuk division of the Archimedes Limestone," 

 and listed as of that horizon by Wachsmuth and Springer, Miller, 

 and Weller. A very large, broad-based form, with surface strongly 

 granular or pustulose. 



Locality. — Very abundant at the type-locality, and more rare at 

 Bradbury Knob and in Marion County, Kentucky; Whites Creek, 

 Tennessee; Palmer's farm, Clark County, Indiana. 



2. A medium-sized, much narrower form occurs at Stone's farm, 

 Clark County, Indiana, perhaps undescribed. 



This genus also comes up from the Devonian and is well repre- 

 sented in the Burlington and Keokuk, where it ends. The Knob- 

 stone species, especially the large pustulose form, is much nearer 

 to one occurring in the Hamilton of Alpena, Michigan, than it is to 

 the Keokuk forms of Iowa and Indiana. 



CATILLOCRINUS Shumard. 



C. tennesseeae (Troost) Shumard.^ Troost's type was from Whites 

 Creek, Tennessee, as stated by Shumard, who saw the specimen at 

 Nashville in 1847. The specimens in the Troost collection, men- 

 tioned in the publication of his monograph, Bulletin 64, U. S. National 

 Museum, page 25, are said to be from Button-mould Knob. Those 

 from which Shumard made his description were from the latter 

 locality "in blue marls and marly limestones, which I suppose to 

 be of the age of the Keokuk division," and the species is listed from 

 that horizon by Wachsmuth and Springer, Miller, and Weller. I 

 have numerous specimens from both the above localities, and also 

 from Palmer's farm, Clark County, Indiana. It has never been 

 found, to my knowledge, in any typical Keokuk locality in Iowa, 

 Illinois, Missouri, or Kentucky. Gorby ^ reports it as occurring 

 in the red Warsaw clays on Rush Creek in Williams's farm, 8 miles 

 northwest of Salem, Indiana, associated with numerous "Pentre- 

 mites of various species, and Batocrinus, Alloprosallocrinus, and 

 several specimens of Catillocrinus tennesseeae Troost, which are 

 locally known as 'quart cups.' " If actually found so associated, 

 it must have been in some gully Avhere the Warsaw fossils were 

 mixed with Knobstone, which is exposed to a thickness of 50 feet 

 on the same farm. I have good specimens of the genus from the 



» Trans. St. Louis Acad. Sci., vol. 2, 18G6, p. 358. 

 » Fifteenth Rep. Geol. Indiana, p. 137. 



