A MONOGRAPH OF THE EXISTING CRINOIDS 41 



Temate; 2-t meters; Willebrord Snellius, June 6, 1930 [A. H. Clark, 1936] 

 (1, L. M.). 



Danish Exptdition to the Kei Islands; Dr. Th. Mortensen; station 37: about 40 

 meters; sand; April 23, 1922 (1). 



Danish Expedition to the Kei Islands; Dr. Th. Mortensen; Neira, Banda; about 

 10 meters; sand; June 1, 1922 (1). 



Danish Expedition to the Kei Islands; Dr. Th. Mortensen; off Neira, Banda; 

 13 meters; sand; June 12, 1922 (1). 



Pulo Taya, South China Sea, southeast of Linga Island, off the east coast of 

 Sumatra (lat. 0°45' N., long. 104°55' E.); Dr. W. L. Abbott, July 1899 [A. H. Clark, 

 1907, 1909, 1912, 1913] (1, U. S. N. M., 22644). 



Noordwachter Eiland, near Batavia, Java; 27-36 meters; Dr. J. Brock, 1884-'85 

 [Hartlaub, 1890, 1891; A. H. Clark, 1907, 1908 (erroneously given as Noordwachter 

 Eiland, Gulf of Tonkin, and, under Antedon bella var. brunnea, as Amboina), 1909, 

 1912 (errors of 1908 repeated), 1913, 1915]. 



Investigator; Arrakan coast, Burma [A. H. Clark, 1909, 1912; H. L. Clark, 1915] 



(1, 1. M.). 



Erroneous localities. — Noordwachter Eiland (North Watcher Island), Gulf of 

 Tonkin [A. H. Clark, 1908, 1912]. This refers to the small island of the same name 

 off Batavia, Java. 



Gulf of Tonkm [A. H. Clark, 1909]. This refers to the precedmg locality. 



Amboma [A. H. Clark, 1908, 1912]. This is an error for Noordwachter Eiland. 



Geographical range. — From Annam, the Bonin, Marshall, Fiji, and Phihppine 

 Islands, to Java and Sumatra, and northward to the Arrakan coast of Burma. 



Bathymetrical range. — From the shore line down to 55 meters. Dr. Bock's 

 record of 64 meters represents the amount of line out, and not the actual depth at 

 which the specimen was taken. The average of 13 records is 34 meters. 



History.— This species was first described under the name of Antedon bella by 

 Dr. Clemens Hartlaub in 1890 from four specimens which had been collected by 

 Dr. J. Brock at Noordwachter Eiland, a small coral island near Batavia, Java. In 

 1891 Hartlaub redescribed in detail and figured Antedon bella and also described a w^ell- 

 marked variety under the name of Antedon bella var. brunnea. 



Hartlaub said that Antedon bella is an undoubted new species, and may well be 

 considered the most interesting of the new species collected by Professor Brock. 

 It is distinguished especially by the unusual color, as well as by the fact that the 

 lappets bordering the ambulacral grooves of the pinnules are overlaid with a layer of 

 gray pigment. Dr. P. H. Carpenter, to whom Hartlaub sent a specimen of the new 

 species, wrote him that the characteristic appearance of the lappets "seems to be due 

 to a white filmy substance, which covers the whole perisome m parts, even the skeleton 

 on the dorsal side and as it extends into the lappets of the ambulacral groove it pro- 

 duces the appearance of imperfect side plates." 



Hartlaub said that in Carpenter's opinion Antedon bella stands nearest his Antedon 

 marginata {= Stephanometra spicata) which, with Antedon clemens { = Heterometra 

 guinduplicava), is distinguished by the absence of IIIBr series. Indeed, these may be 

 entirely lacking in Antedon bella also, as is shown by one of the specimens with 20 



724008 — 47 4 



