143 

 Genus DORYCRINUS. Roemer. 



[Ety. : Dory, spear; krinon, lily.] 

 (1854: Archiv. fur Naturgesch. , Jahr. XIX., Bd. I., p. 207.) 



This genus seems to be represented in the Hamilton beds 

 of this region by strong tegminal spines, which were found 

 in the Demissa bed. (Fig. 24, i.) The genus, as restricted 

 by Wachsrauth and Springer, has, to my knowledge, not 

 been recorded from so low an horizon. 



The spinose tegminal plate (Fig. 24, h) and the calyx base 

 (Fig. 24, k) have not been identified. 



Genus HABROCRINUS. D'Orb. 



[Ety.: Habros, splendid; krinon, lily.] 



(1851: Abracrinus D'Orbigny,— Cours elem. de Paleont, Vol. II., Fasc. II., 

 p. 144. Habrocrinus (D'Orb.) Angelin,— Iconographia crinoideorum, p. 3.) 



Basals three, equal ; costals 2x5, the distichals support- 

 ing the arms. Anal interradial plate very large, heptagonal, 

 and followed by a second between two inter-brachials, 

 above which follow numerous other plates. Arms uniserial, 

 long, heavy, and simple throughout. 

 Habrocrinus pentadactylus. sp. nov. (Fig. 25.) 

 Distinguishing Characters. — Obeonical form, uniformly 

 enlarging from base upwards; rather large basal plates; 

 " large radials and smaller costals ; strong, carinate, rounded 



Fig. 25. Habrocrinus pentadactylus. Two specimens enlarged, with an analysis of 

 the calyx, (a) Anal interradius. The shaded portion is added from the smaller of the 

 two specimens. (Original.) 



