9 



with the first primary radials and nearly as large, it is fol- 

 lowed in the second range by three plates, above w T hich there 

 are two plates. One is above the middle plate and the other 

 is to the right of it. 



The vault is moderately convex, covered with polygonal 

 spinous plates, and bears a subcentral proboscis. No ovarian 

 pores have been discovered. 



This species is distinguished among the eighteen armed 

 species, by its general form, surface ornamentation, two sec- 

 ondary radials, and by the interradial and azygous areas. 



It was found in the Warsaw Group, at Salem, Indiana, and 

 is now in the collection of Charles L. Paber. 



BATOCRINUS STELLIFORMU1S, 11. sp. 



Plate I, Fig. 13, basal view; Fig. 14, azygous side; Fig. 15, 



summit. 



Species below medium size, depressed, biturbinate. Calyx 

 broadly rounded below, about three times as wide as high. 

 Radial ridges slightly defined and each series projecting so as 

 to give it a stellate outline. Ambulacral openings directed up- 

 ward and not visible from a basal view. Plates plane and 

 smooth. 



Basal plates form a low cup, hexagonal, with a slight re- 

 entering angle on the azygous side, diameter one- half greater 

 than the diameter of the column. Depression for the attach- 

 ment of the column, moderately concave. First primary ra- 

 dials large, a little wider than long, three hexagonal, two 

 hoptagonal. Second primary radials short, quadrangular, three 

 or four times as wide as long. Third primary radials about 

 one-half larger than the second, three times as wide as long, 

 pentagonal, axillary, and, in four rays, bear upon each upper 

 sloping side two secondary radials, the last ones of which are 

 axillary and bear upon each upper sloping side two tertiary 

 radials, which gives to each of these rays four arms. In the 

 ray opposite the azygous area, the third primary radial bears 

 upon each upper sloping side three secondary radials, which 

 gives to it two arms. There are, therefore, eighteen arms in 

 this species, and eighteen ambulacral openings to the vault. 



