109. CONTRIBUTION TO 



DOLATOCRINUS PULCHELLUS, M. &G., Rowley. 



Plate 33. Figs. 16, 17, 18. 



This little crinoid seems to be the form described by Miller andGurley as 

 D. puJchellus, but agrees quite as well with D. aspratilis, having one less arm- 

 base, however. 



Each radial and the tirst interradial plate have strong central spine-like 

 nodes and the few radiating lines are strong. That part of the dorsal surface 

 as far outward from the stem as the middle of the first radials is a smooth pen- 

 tagonal figure for the most part a wide funnel-shaped area. There seems to be 

 but one interradial above the first plate of that area. 



Horizon, locality and collection, same as the last. 



There is little doubt in the author's mind that D. bulbaceus, D. pulchellus, 

 D. argutus and D. aspratilis of M. & G. are one and the same species, despite 

 an extra arm-base in one and the slight variations in sculpture. 



