NO. 1846. ON CERTAIN ELEUTHEROZOIC PELMATOZOA—KIRK. 133 



Anomalocystis disparilis Hall. 



Fig. 9. Adoral (anterior) view of theca, showing terminal aperture and sockets for 

 the articulation of the spines. Original in the United States National Mu- 

 seum, catalogue number 33661. 



10. Lateral \dew of the same specimen. 



11. Aboral view of the same individual showing deep, socket-like depression 



for the reception of the stem. 



Plate 4. 



Isocrinus maclearanus Wyville Thomson. 



Fig. 1. A complete individual, showing the extreme brevity of the column, approxi- 

 mately X 1. From Carpenter, 1884. (PI. 16, fig. 1.) 



Isocrinus decorus Wyville Thomson. 



2. A very young specimen with a practically complete column, approximately 



X 2. From Carpenter, 1884. (PI. 35, fig. 1.) 



Woodocrimis rnacrodactylus de Koninck. 



3. A complete individual, showing the tapering column with no evidence of 



structure for permanent fixation, approximately X 1- From Zittel, 1896. 

 (Text fig. 265, p. 159.) After de Koninck. 



Plate 5. 



Pentacrinus {Extracrinus) collenoti de Loriol. 



Fig. 1. A portion of the cirrus, enlarged. After de Loriol, 1884-1889. (PL 198, 

 fig. 16.) 



2. The distal ossicles of a cirrus, showing the terminal claw. After de Loriol, 



1884-1889. (PI. 198, fig. Ih.) 



3. Articular face of a cirrus ossicle. After de Loriol, 1884-1889. (PI. 196, 



fig.W.) 



Cactocrinus proboscidialis (Hall). 



4. Portion of three juxtaposed pinnules enlarged, showing close union effected 



by overlapping of the lateral processes on adjacent pinnules. After Wach- 

 smuth and Springer, 1897. (PL 58, fig. 7c.) 



5. A single pinnule ossicle greatly enlarged, showing the nature and relation of 



the lateral spinous process to the ossicle. 



Lepadocrinus gebhardi (Conrad). 



6. Portion of the column, showing discrete, articulated ossicles above, and the 



consolidated, terminal portion below. After Hall, 1859. (PL 7, fig. 5.) 



7. Terminal fused portion of the column of another individual, showing a pustu- 



lose surface. After Hall, 1859. (PL 7, fig. 16.) 



Brachiocrinus nodosarius Hall. 



8. Distal portion of the column, showing its termination in a knob. Above may 



be noted the points of attachment for two of the lateral cirri. X 2. After 

 Hall, 1859. (PL 6, fig. 2a.) 



Ancyrocrinus bulbosus Hall. 



9. Distal portion of the column showing the grapnel, the fused columnals, and 

 above, some of the unaltered columnals. From Bather, 1900. (Text 

 fig. 51, p. 134.) After Hall. 



