102 THE APODOTJS HOLOTHURIANS 



DISTRIBUTION. Reported from north of Sumbawa, East Indies, 794 m. 

 (Sluiter). 



REMARKS. This is another of the "Siboga's" interesting discoveries, 

 unique in the form of the accessory calcareous bodies, in the presence of teeth 

 on the shaft of the anchor, and also, if Sluiter 's figure is correctly drawn, in 

 the direction of the teeth towards, instead of away from, the tips of the arms. 

 '-' As' the only specimen was a fragment, nothing is known of the internal 

 y. , ; Fisher's change of name for this species seems to be necessary. 



PROTANKYRA VERRILLI. 

 PLATE V, FIG. 29. 



Synapta verrilli Theel, 1886a, p. 12. Calcareous particles^ pi. i, fig. 1. 

 Protankyra verrilli Ostergren, 1898&. 



LENGTH. About 23 mm. 



COLOR. Yellowish white (in alcohol). 



DISTRIBUTION. Reported from near Cape York, Australia, 14 m. (Theel). 



REMARKS. The simple calcareous particles is the principal character to 

 distinguish this species from the next; but the small size, pale color, and 

 tendency of the anchors to be asymmetrical are other differences. There were 

 four polian vessels and a single stone-canal in the type. 



PROTANKYRA BIDENTATA. 

 PLATE V, FIG. 30. 



Synapta bideniata Woodward and Barrett, 1858, p. 365. Calcareous particles, pi. 



xiv, figs. 23-25. 



Synapta molesta Semper, 1868, p. 9. Calcareous particles, pi. iv, fig. 13. 

 Synapta distincta v. Marenzeller, 1881, p. 123. Calcareous particles, pi. iv, fig. 2. 

 Protankyra bidentata Ostergren, 1898&. 

 Protankyra molesta Ostergren, 1898&. 

 Protankyra distincta Ostergren, 1898&. 



LENGTH. 30-100 mm.; diameter nearly one-fourth as much, according to 

 Woodward and Barrett, but their specimen must have been greatly contracted. 



COLOR. Reddish gray, reddish violet, or clear reddish ; according to Wood- 

 ward and Barrett, their preserved specimen was "devoid of color." 



DISTRIBUTION. Reported from China (Woodward and Barrett) ; Bohol, 

 Philippines (Semper); Japan (v. Marenzeller, Theel); and Amoy (Ludwig). 



REMARKS. Lampert ('85) is probably correct in identifying molesta Sem- 

 per with bidentata Woodward and Barrett, but why he should have deliberately 

 ignored the latter name, which has ten years' precedence and is accompanied 

 by a good description and excellent figures, it is hard to see. The differences 

 between bidentata and distincta are so sJight and the calcareous particles of 

 the latter so variable (see Theel, '86), that it is hard to believe they are not 



